Brain Teasers

06:13
Can you solve the basketball robot riddle? - Dan Katz

1 month ago / 34 views

Practice more problem-solving at https://brilliant.org/TedEd--Youve spent months creating a basketball-playing robot, the Dunk-O-Matic, and youre excited to demonstrate its capabilities. Until you read an advertisement: See the Dunk-O-Matic face human pla
2:02:41
101 Little-Known Facts That Will Make You a Trivia Master

4 months ago / 138 views

#brightside Animation is created by Bright Side. ----------------------------------------------------------------------------------------Music from TheSoul Sound: https://thesoul-sound.com/ Listen to Bright Side on: Spotify - https://open.spotify.com/show
04:51
Can you solve the magical maze riddle? - Alex Rosenthal

4 months ago / 76 views

Practice more problem-solving at https://brilliant.org/TedEd--Today is the annual wizard tournament featuring competitors from three schools, and youre in charge. The wizards have entered the maze and compete in your chosen events in utmost secrecy; only
10:19
The Most Controversial Problem in Philosophy

7 months ago / 141 views

For decades, the Sleeping Beauty Problem has divided people between two answers. Head to https://brilliant.org/veritasium to start your free 30-day trial, and the first 200 of you will get 20% off an annual premium subscription.Many thanks to Dr. Mike Tit
09:49
Solve the Spider Riddle and Prove You're Smarter Than Most

9 months ago / 183 views

Do you have what it takes to crack the spider riddle, a puzzle that only the sharpest minds can unravel? Join us for a brain-teasing challenge that will test your logic and problem-solving skills. See if you can outsmart the eight-legged critter in this t
04:31
Can you solve the cursed dice riddle? - Dan Finkel

10 months ago / 140 views

Practice more problem-solving at https://brilliant.org/TedEd--Ah, spring. As Demeter, Goddess of the Harvest, its your favorite season. Humans and animals look to you to balance the bounty of the natural world which, like any self-respecting Goddess, you
05:18
Can you solve the time traveling car riddle? - Dan Finkel

1 year ago / 158 views

Practice more problem-solving at https://brilliant.org/TedEdYou and the professor have driven your DeLorean back to the past to fix issues with the spacetime continuum caused by your time traveling. But another DeLorean appears with older versions of you
15:06
Can You Solve This Astronomical Riddle?

1 year ago / 133 views

In this video we look at one of the greatest astronomy riddles in history. A special thank you to Dr. Christian Sasse for all your help with this video, as well as the people of Siding Spring Observatory who made my time there so pleasant. If you'd like t
05:24
Can you outsmart Fate and break her ancient curse? - Dan Finkel

1 year ago / 176 views

Practice more problem-solving at https://brilliant.org/TedEd--Hundreds of years ago, your ancestor stole a magical tarot deck from Fate herself and it came with a terrible cost. Once every 23 years, one member of your family must face Fate in a duel with
04:40
Can You Beat ALL of These Trolls Brain Games? | TROLLS

1 year ago / 187 views

WATCH MORE https://www.youtube.com/playlist?list=UULFY26xU0-avwTJ6F6TzUZVEw SUBSCRIBE https://www.youtube.com/c/PeacockKids?sub_confirmation=1Welcome to a Trolls Brain Break! We're playing some awesome minigames with your favorite Trolls characters! How w
00:58
The Highest-Scoring Move in Scrabble

1 year ago / 205 views

For a little more info, check out the longer version on my TIkTok (I can make videos over 1 minute there): https://www.tiktok.com/@corndogwillyDave Wood's post: https://www.scrabulizer.com/blog/post/3
00:47
the circle dot trick

1 year ago / 178 views

Can you figure out how to draw a circle without ever lifting your pen from the center dot and no lines in the middle?
05:08
This one weird trick will get you infinite gold - Dan Finkel

1 year ago / 191 views

Practice more problem-solving at https://brilliant.org/TedEd--A few years ago, the king decided your life would be forfeit unless you tripled the gold coins in his treasury. Fortunately, a strange little man appeared and magically performed the feat. Unfo
05:20
Can you steal the most powerful wand in the wizarding world? - Dan Finkel

1 year ago / 192 views

Practice more problem-solving at https://brilliant.org/TedEd--The fabled Mirzakhani wand is the most powerful magical item ever created. And thats why the evil wizard Moldevort is planning to use it to conquer the world. You and Drumbledrore have finally
21:30
25 Clever Riddles for Kids (With Answers)

1 year ago / 288 views

Most people can appreciate a funny riddle. Riddles are a good way to keep your mind busy while making it smarter.Are you looking for a fun way to entertain you brain? Maybe you want to bring your whole family in on the fun? Today, we have some clever and
05:13
Can you solve the alien pyramid riddle? - Henri Picciotto

1 year ago / 315 views

You and your team of scientists are trapped on Mars. Can you figure out how to survive on the desert planet?--Today is the anniversary of the best-worst day of your life. The best part was discovering a subterranean city on Mars. The worst part was when y
17:45
The Riddle That Seems Impossible Even If You Know The Answer

2 years ago / 193 views

The 100 Prisoners Riddle feels completely impossible even once you know the answer. This video is sponsored by Brilliant. The first 200 people to sign up via https://brilliant.org/veritasium get 20% off a yearly subscription.Special thanks to Destin of Sm
01:57
Mathematical Magic - Mr. Wizard's Everyday Magic

2 years ago / 197 views

Learn some mathematical magic from Mr. Wizard. Subscribe now for more science, nature and technology clips from the 1980's Nickelodeon show, Mr. Wizard's World, every week on #WizardWednesdays. SUBSCRIBE HERE: http://bit.ly/mrwizard
05:23
Can you solve the fortress riddle? - Henri Picciotto

2 years ago / 291 views

Practice more problem-solving at https://brilliant.org/TedEd--Bad news: your worst enemies are at the gate. Your fledgling kingdom guards the worlds only herd of tiny dino creatures. To you, theyre sacred. To everyone else, theyre food. The three closest
06:17
Can you solve the feeding frenzy riddle? - Henri Picciotto

2 years ago / 350 views

Practice more problem-solving at https://brilliant.org/TedEd--As Numberlands best detective, you thought youd seen it all. But the desiccated corpses of prominent natural numbers have been showing up all over the city. A lockdown is ordered from sundown t
The Circular Train Puzzle

2 years ago / 266 views

You are trapped in a circular train. What is the best method for figuring out how many train cars there are?
04:48
Can you solve the birthday cake riddle? - Marie Brodsky

2 years ago / 234 views

Practice more problem-solving at https://brilliant.org/TedEd--Your friends birthday is tomorrow, and hes turning well youve forgotten. A ginormous cake has been prepared and your job is to sculpt his age as the chocolate centerpiece. The birthday boy is a
05:29
Can you solve the human cannonball riddle? - Alex Rosenthal

2 years ago / 298 views

Practice more problem-solving at https://brilliant.org/TedEd--They call you the human cannonball. Your act involves flying through rings of fire, bouncing through a trampoline course, and catching the trapezist in the grand finale. Todays pre-flight test
06:19
Can you solve the rogue submarine riddle? - Alex Rosenthal

2 years ago / 321 views

Practice more problem-solving at https://brilliant.org/TedEd--Smuggling yourself aboard the rogue submarine was the easy part. Hacking into the nuclear missile launch override a little harder. And youve got a problem: you dont have the override code. You
07:29
The Problem 51% Of People Can't Solve

2 years ago / 277 views

How does your brain work? These simple puzzles will reveal a lot!The first 1,000 people to use this link will get a 1 month free trial of Skillshare: https://skl.sh/asapscience06211Subtraction Podcast Episode: https://youtu.be/ubDxwamG_74Huge thanks to Le
05:07
Can you solve the giant spider riddle? - Dan Finkel

2 years ago / 385 views

Practice more problem-solving at https://brilliant.org/TedEd--Once every century, the worlds greatest spiders gather to compete in a series of grueling games. The winner will become the next arachnomonarch, able to command all the worlds spiders to their
22:09
The Simplest Math Problem No One Can Solve

2 years ago / 330 views

The Collatz Conjecture is the simplest math problem no one can solve it is easy enough for almost anyone to understand but notoriously difficult to solve. This video is sponsored by Brilliant. The first 200 people to sign up via https://brilliant.org/veri
04:53
Can you cheat death by solving this riddle? - Shravan S K

3 years ago / 327 views

Practice more problem-solving at https://brilliant.org/TedEd--You and your best friend Bill are the greatest bards in the kingdom but maybe not the brightest. Your hit song has insulted the king and now youre slated for execution. Luckily, Death is a conn
08:31
The Penny Problem That Breaks Your Brain

3 years ago / 519 views

Get the Vsauce Curiosity Box: https://www.curiositybox.com/Your mind is a massive collection of information, patterns, trivia, algorithms, and more -- and you have absolutely no idea how or when any of it is going to be useful. If youve got 50 stacks of 5
00:42
Win the $10 Hat Game #shorts

3 years ago / 266 views

Would YOU arrange the dollars differently? #shorts
05:36
Can you solve the Trojan War riddle? - Dennis E. Shasha

3 years ago / 694 views

Practice more problem-solving at https://brilliant.org/TedEd--On Olympus, youve been waiting for an opportunity to bring the bloody Trojan War to its conclusion. The two sides have agreed to a brief truce, and when you consult the Fates, they advise: shou
06:07
How An Infinite Hotel Ran Out Of Room

3 years ago / 442 views

If there's a hotel with infinite rooms, could it ever be completely full? Could you run out of space to put everyone? The surprising answer is yes -- this is important to know if you're the manager of the Hilbert Hotel. References: Ewald, W., & Sieg, W. (
15:04 Popular
The Easiest Problem Everyone Gets Wrong

3 years ago / 1,595 views

Watch my newest video, "Could a Toothpaste Sandwich Brush Your Teeth?": https://youtu.be/OdeiWhETqQYWe know how difficult the Monty Hall Problem is for so many people even after theyre shown all the math behind the best possible strategy. Its basic probab
05:42
Can you solve Dongle's Difficult Dilemma? - Dennis E. Shasha

3 years ago / 465 views

Practice more problem-solving at https://brilliant.org/TedEd--According to legend, three galactic terraformers shaped your planet into a paradise. When their work was done, they left the source of their power behind: three golden hexagons, hidden in dunge
08:38 Popular
Am I Smarter Than a 9 Year Old ?

3 years ago / 730 views

Get your own piece of Azzyland by exploring my first ever merch shop at https://www.azzyland.com/shopI put a lot of love and care into each and every item and hope you enjoy them as much as I did making them!Azzyland - Am I Smarter Than a 9 Year Old ? Tha
05:43
Can you solve the fantasy election riddle? - Dennis E. Shasha

3 years ago / 370 views

Practice more problem-solving at https://brilliant.org/TedEd--After much debate, the realm has decided dragon jousting may not be the best way to choose its leaders, and has begun transitioning to democracy. Your company was hired to survey the citizens o
05:36
Can you solve the monster duel riddle? - Alex Gendler

3 years ago / 592 views

Practice more problem-solving at https://brilliant.org/TedEd/ --Youve come a long way to compete in the great Diskymon league and prove yourself a Diskymon master. Now that youve made it to the finals, youre up against some tough competition. In round one
05:05
Can you solve the Alice in Wonderland riddle? - Alex Gendler

3 years ago / 503 views

Practice more problem-solving at https://brilliant.org/TedEd/ --After many adventures in Wonderland, Alice has once again found herself in the court of the temperamental Queen of Hearts. Shes about to pass through the garden undetected, when she overhears
05:00
Can you solve the riddle and escape Hades? - Dan Finkel

3 years ago / 513 views

Practice more problem-solving at https://brilliant.org/TedEd/--The underworld is overcrowded, and Zeus has ordered Hades to let some spirits out. Hades arranges all the souls of the dead in a line before Cerberus. When one of his three heads bites down on
05:45
How to outsmart the Prisoners Dilemma - Lucas Husted

3 years ago / 461 views

Puzzle through the classic game theory challenge, The Prisoners Dilemma, and decide: would you choose to spare or sacrifice? --Two perfectly rational gingerbread men, Crispy and Chewy, are out strolling when theyre caught by a fox. Instead of simply eatin
06:00
Can you solve the sorting hat riddle? - Dan Katz and Alex Rosenthal

3 years ago / 539 views

Practice more problem-solving at https://brilliant.org/TedEd/ -- It’s your first day at Magnificent Marigold’s Magical Macademy. But before you can learn your first spell you must get through the sorting ceremony. And the sorting hat has chose
03:20
Solve These Logic Brain Teaser Puzzles

3 years ago / 519 views

Can you solve these matchstick logic puzzles? Play against the clock and test your brain. Different games with answers using matches, can you find the solution.More fun here: https://www.youtube.com/watch?v=VJf8XAhC550&list=PLQ_T2NppE0PKmgRUgvDnGkB_iC_rwq
04:44
Can You Solve This?

3 years ago / 328 views

Can you figure out the rule?Did you see the exponents pattern? http://youtu.be/AVB8vRC6HIYWhy do you make people look stupid? http://bit.ly/12FmlplHow do you investigate hypotheses? Do you seek to confirm your theory - looking for white swans? Or do you t
05:33
Can you solve the honeybee riddle? - Dan Finkel

3 years ago / 460 views

Practice more problem-solving at https://brilliant.org/TedEd/ --Youre a biologist on a mission to keep the rare honeybee Apis Trifecta from going extinct. The last 60 bees of the species are in your terrarium. Youve already constructed wire frames of the
05:15 Popular
Can you solve the Ragnarok riddle? - Dan Finkel

4 years ago / 1,043 views

Practice more problem-solving at https://brilliant.org/TedEd/--Ragnarok: The fabled end of the world, when giants, monsters, and Norse gods battle for the future. The gods were winning until the great serpent Jrmungandr emerged. It swallowed Valhalla and
05:27
Can you solve the sea monster riddle? - Dan Finkel

4 years ago / 561 views

Practice more problem-solving at https://brilliant.org/TedEd/ --According to legend, once every thousand years a host of sea monsters emerges from the depths to demand tribute from the floating city of Atlantartica. As the ruler of the city, youd always d
19:31 Popular
We tried the 60 SEC SURVIVAL CHALLENGE !

4 years ago / 922 views

Azzyland - We tried the 60 SEC SURVIVAL CHALLENGE !Gloom: https://youtu.be/Yax_jNOljcU SUBSCRIBE and become part of the AzzyLand family :D SOCIAL MEDIAInstagram: https://www.instagram.com/azzyland/Tik Tok: https://www.tiktok.com/@azzylandFacebook: https:/
05:51
Can you solve the death race riddle? - Alex Gendler

4 years ago / 525 views

Practice more problem-solving at https://brilliant.org/TedEd/ --The night before the Death Race across the Wastelands is set to begin, your uncle, the great inventor Slate Kanoli, got kidnapped by the ruthless No-Side gang. The only way to get him back is
04:22
Everything changed when the fire crystal got stolen - Alex Gendler

4 years ago / 445 views

This riddle was created in partnership with Brilliant. Practice more problem solving here: https://brilliant.org/TedEd/ --Someone has tripped the magical alarms in the Element Temple. When you and the other monks arrive on the scene, you know you have a d
05:04
Can you solve the dragon jousting riddle? - Alex Gendler

4 years ago / 569 views

Practice more problem-solving at https://brilliant.org/TedEd/ -- After years of war, the worlds kingdoms have come to an agreement. Every five years, teams representing the elves, goblins, and treefolk will compete in a grand tournament of dragon jousting
04:59
Game theory challenge: Can you predict human behavior? - Lucas Husted

4 years ago / 450 views

Solve this classic game theory challenge: given integers from 0 to 100, what would the whole number closest to of the average of all numbers guessed be?--Given a range of integers from 0 to 100, what would the whole number closest to 2/3 of the average of
04:43
Can you solve the secret sauce riddle? - Alex Gendler

4 years ago / 683 views

As a top spy trained in infiltration and safecracking, its up to you to steal the competitions secret sauce recipe. Can you figure out where it's hidden? --One of the top chefs from Pasta Palace has been kidnapped by operatives from Burger Bazaar hoping t
02:51 Popular
Who's the Thief? | TABLETOP MYSTERIES

4 years ago / 709 views

Can you help Detective Kylee collect the clues to find who stole her game console?One crime scene. One tabletop. All the clues you need. Can you crack the case?Follow DreamWorksTV! instagram - https://instagram.com/dreamworkstv/twitter - https://twitter.c
04:25
Can you solve the multiverse rescue mission riddle? - Dan Finkel

4 years ago / 549 views

A bug in the superconductor system has trapped your team in 11 separate dimensions. Can you get them back home safely? --It was a normal Tuesday at the superconductor, until a bug in the system caused your team to be trapped in 11 separate dimensions. For
03:53
Who Killed This Cake? | TABLETOP MYSTERIES

4 years ago / 413 views

Detective Kylee is on the case to find out who wrecked Perfect Pattys prized cake. Follow DreamWorksTV! instagram - https://instagram.com/dreamworkstv/twitter - https://twitter.com/dreamworkstvfacebook - https://www.facebook.com/dreamworkstvJoin the fun o
04:25
Can you solve the dark matter fuel riddle? - Dan Finkel

5 years ago / 537 views

An ancient, abandoned alien space station has been discovered. Can you beat everyone in the galaxy and reach it first?--Its an incredible discovery: an abandoned alien space station filled with precursor technology. Now every species in the galaxy is in a
10:51
A Game You Can Always Win

5 years ago / 504 views

Watch my newest video, "The Game You Win By Losing (Parrondo's Paradox)": https://youtu.be/PpvboBJEozMGet Vsauce's favorite science and math toys delivered right to your door: http://www.curiositybox.com The 100 game was created by the Reverend Charles Lu
08:05
A Game You Can Never Win

5 years ago / 471 views

Watch my newest video, "The Game You Win By Losing (Parrondo's Paradox)": https://youtu.be/PpvboBJEozMNot a real offer.*** LINKS ***Get Vsauce's favorite science and math toys delivered to your door!https://www.curiositybox.com/2018 Currency Budgethttps:/
12:00
A Problem You'll Never Solve

5 years ago / 513 views

Watch my newest video, "The Game You Win By Losing (Parrondo's Paradox)": https://youtu.be/PpvboBJEozMCuriosity Box: https://www.curiositybox.comMrBeasts $1,000,000 Dilemma: https://youtu.be/NkYCWqzBc7MNewcombs Paradox has confounded philosophers, mathema
16:13 Popular
The Game You Win By Losing (Parrondo's Paradox)

5 years ago / 811 views

Watch my collab with Donut Media: https://youtu.be/1RNc-2hpHP8Thanks to Donut Media for supporting Vsauce2 and having me on their channel. Go check them out and support them. They're great!While working on the interplay between thermodynamics and informat
10:12
Birds In A Truck Riddle

5 years ago / 495 views

Watch my newest video, "The Game You Win By Losing (Parrondo's Paradox)": https://youtu.be/PpvboBJEozMDownload Angry Birds 2 from your app store today! https://c.singular.net/api/v1/ad?st=59571402224&pcn=Vsauce2&psn=Vsauce2&h=133970888f55d20b2a1077b676434
10:10 Popular
MrBeast's $1,000,000 Dilemma

5 years ago / 2,103 views

Watch my newest video, "The Game You Win By Losing (Parrondo's Paradox)": https://youtu.be/PpvboBJEozMVsauce Hat: https://bit.ly/2GlAvpLMissing Dollar Riddle: https://youtu.be/tLgttp5CdjQ*** LINKS ***MrBeasthttps://www.youtube.com/user/MrBeast6000/Metamag
08:31
The Missing Dollar Riddle

5 years ago / 563 views

Watch my newest video, "The Game You Win By Losing (Parrondo's Paradox)": https://youtu.be/PpvboBJEozMLastPass: http://bit.ly/2QCDAYQHuge thanks to LastPass for sponsoring Vsauce2. Vsauce Podcast: https://youtu.be/YHLZitYYyIg*** LINKS ***Walkingames Tutor
10:20
The Birthday Paradox

5 years ago / 521 views

Watch my newest video, "The Game You Win By Losing (Parrondo's Paradox)": https://youtu.be/PpvboBJEozMBitdefender: http://bit.ly/2SUrIOrHuge thanks to Bitdefender for supporting Vsauce2.**** LINKS ****Birthday Attack Example In Hackinghttps://www.youtube.
13:58 Popular
Ant On A Rubber Rope Paradox

5 years ago / 720 views

Watch my newest video, "The Game You Win By Losing (Parrondo's Paradox)": https://youtu.be/PpvboBJEozMPLEASE SUBSCRIBE TO MY PODCAST: https://bit.ly/2BCLhoKCuriosity Box: https://www.curiositybox.com/*********** LINKS *************The Create Unknown Podca
05:13
The most unexpected answer to a counting puzzle

5 years ago / 673 views

If the answer here doesn't blow your mind, I don't know what will. Part 2: https://youtu.be/jsYwFizhncE Part 3: https://youtu.be/brU5yLm9DZM Home page: https://www.3blue1brown.com Brought to you by you: http://3b1b.co/clacks-thanks Stay tuned for more: ht
10:42 Popular
Top 10 Puzzles Only The Smartest 2% Can Solve

5 years ago / 1,610 views

These amazing top 10 puzzles are the best way to challenge and grow your mind to become smarter than you are. There are also few riddles and some tricky brain teasers which only 2% of the people were able to solve. So, it's a great chance to see if you ar
12:29 Popular
ONLY 1 OUT OF 1000 CAN SEE WHAT'S EXACTLY INSIDE THE WALL | TOP 10 OPTICAL ILLUSIONS EVER!

5 years ago / 1,049 views

99% people failed to solve these top 10 illusions. If you are the 1 out of 100 who can crack all the illusions, then you are truly a Genius! Because the level of these optical illusions and viral pictures is such that some will test your intelligence, whi
11:26 Popular
10 Tricky Riddles and Logic Puzzles To Sharpen Your Brain

5 years ago / 1,135 views

If you are a Genius, can you solve this puzzle? So, test your ingenuity and knowledge with these top 10 amazing riddles and puzzles that 90% fail to answer. Subscribe to FactoFusion: http://bit.ly/FactoFusion Our Social Media: Like us on Facebook: https:/
06:04
Part 3: Who is Lying??? | SCHNECK AND ECK CRACK THE CASE

5 years ago / 532 views

It's time for Schneck and Eck to hook their suspects up to a lie detector test! They also find an eye-witness to the crime! How cool is your mom or your dad? Three teams, each comprising of a parent and kid, compete in this half hour game show. Parents ar
03:43 Popular
Can you solve the unstoppable blob riddle? - Dan Finkel

5 years ago / 1,283 views

A shooting star crashes onto Earth and unleashes a hideous, rampaging blob. Can you stop it from destroying the planet? -- A shooting star crashes onto Earth and a hideous blob emerges. It creeps and leaps, it glides and slides. It’s also unstoppabl
04:25
Can You Solve this Vampire Riddle? | NUMBER CRUSHERS

5 years ago / 606 views

Can You Solve this Vampire Riddle? See if you have the smarts to solve this blood-sucking riddle! Will Jon wake up before the Zombie strikes? Will Gary sink into quicksand before his friend can save him? Take a guess or do the math to know what happens on
03:25 Popular
Can you solve the jail break riddle? - Dan Finkel

5 years ago / 853 views

You’re a bank robber trying to escape from jail. Can you solve the riddle to get past the fence to freedom? -- Your timing made you and your partner infamous bank robbers. Now, you need to use that timing to break out of jail. Your partner is about to fla
06:10 Popular
Can You Solve the Evil Librarian's Deadly Riddle? | NUMBER CRUSHERS

5 years ago / 847 views

Can You Solve the Evil Librarian's Deadly Riddle? Izzy challenges you to solve three mind-boggling riddles! Will Jon wake up before the Zombie strikes? Will Gary sink into quicksand before his friend can save him? Take a guess or do the math to know what
11:41 Popular
10 Fun Kiddy Riddles That Stump Most Adults

5 years ago / 1,182 views

How to Boost Your Brain Quickly. Do you think you are smarter than other people and have exceptional logic? Test your brain and your analytical skills with our incredibly hard riddles. If you solve puzzles and riddles regularly, you’re giving your b
12:31 Popular
Can You Guess Who's Lying? 3 Logic Riddles to Train Your Problem Solving Skills

5 years ago / 825 views

Get better at problem solving today with Brilliant! The first 200 people to sign up will get a 20% discount: https://brilliant.org/upandatom Hi! I'm Jade. Subscribe to Up and Atom for new physics, math and computer science videos every two weeks! *SUBSCRI
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Can you solve the vampire hunter riddle? - Dan Finkel

5 years ago / 629 views

You’re a vampire hunter entering the enemy’s lair. Can you outsmart this tricky brainteaser and vanquish the vampires? -- You’ve stealthily descended into the darkness of a vampire cave, setting a sequence of mirrors as you go. When the sun reaches the ri
03:13 Popular
Will You Survive the Zombie Apocalypse?! | NUMBER CRUSHERS

5 years ago / 844 views

Will You Survive the Zombie Apocalypse?! Math-Wiz Izzy challenges you to solve this undead brain teaser! Will Jon wake up before the Zombie strikes? Will Gary sink into quicksand before his friend can save him? Take a guess or do the math to know what hap
04:39 Popular
Can you solve the multiplying rabbits riddle? - Alex Gendler

5 years ago / 1,124 views

Sign up for our newsletter and never miss an animation: http://bit.ly/TEDEdNewsletter View full lesson: https://ed.ted.com/lessons/can-you-solve-the-multiplying-rabbits-riddle-alex-gendler After years of experiments, you’ve finally created the pets of the
04:32 Popular
Can you solve the time travel riddle? - Dan Finkel

5 years ago / 796 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to bonus riddle: https://brilliant.org/TedEdTimeTravel/ Your professor has accidentally stepped through a time portal in his physics lab. You’ve got just a minute to jump through befor
03:38 Popular
Can you solve the giant iron riddle? - Alex Gendler

5 years ago / 1,140 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to bonus riddle: https://brilliant.org/TedEdGiantIron/ The family of giants you work for is throwing a fancy dinner party, but there’s a problem — the elder giant’s favorite shirt is w
04:29 Popular
Can you solve the secret werewolf riddle? - Dan Finkel

5 years ago / 1,483 views

Practice more problem-solving at https://brilliant.org/TedEd/ Signup to receive the bonus riddle's solution: https://brilliant.org/TedEdWerewolf/ You’re on the trail of a werewolf that’s been terrorizing your town. After months of detective work, you’ve n
04:51 Popular
Can you solve the stolen rubies riddle? - Dennis Shasha

5 years ago / 743 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to Bonus Riddle: https://brilliant.org/TedEdRuby/ Townspeople are demanding that a corrupt merchant’s collection of 30 rubies be confiscated to reimburse the victims of his schemes. Th
04:52 Popular
Can you solve the killer robo-ants riddle? - Dan Finkel

5 years ago / 967 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to Bonus Riddle: https://brilliant.org/TedEdRoboAnts/ The good news is that your experimental robo-ants are a success. The bad news is that you accidentally gave them the ability to sh
05:09 Popular
Can you solve the alien probe riddle? - Dan Finkel

5 years ago / 1,047 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to Bonus Riddle: https://brilliant.org/TedEd3ColorCube/ Your team has developed a probe to study an alien monolith. It needs protective coatings — in red, purple or green — to cope wit
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Puzzles: 5 "easy"... and one impossible!! (with answers)

5 years ago / 652 views

★★ For more broccoli puzzles stuffs... Subscribe to DB! ★★ The überchallenge is to solve the impossible parking lot question (brain teaser puzzle) at the end. But first warm up with some supposedly "easy" puzzles at the beginning. I hope you enjoy it and
03:50 Popular
Most People Fail!! (IQ test with answers)

5 years ago / 726 views

Most people fail!! That's because they are either artists or scientists, but rarely both! See if you are smart enough to pass this Brain Test. Let me know in the comments! I hope you enjoy this brain challenge. I have combined visual memory with number me
03:28 Popular
95% Fail: 8 funny trick questions your friends will ALWAYS get wrong! (with answers)

5 years ago / 2,955 views

These are 8 awesome trick questions your friends will always get wrong! Guaranteed! :) I have picked these 8 funny brain teasers because I am sure that no-one would get them right when asked spontaneously. See for yourself, whether you will get the right
05:18 Popular
Can you solve the rebel supplies riddle? - Alex Gendler

5 years ago / 1,019 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to Bonus Riddle: https://brilliant.org/tededmislabelledboxes/ You’re overseeing the delivery of supplies to a rebel base in the heart of enemy territory. To get past customs, all packa
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The Monty Hall Problem - Christmas Lectures with Ian Stewart

5 years ago / 532 views

Ian Stewart explains the Monty Hall problem and its solution. Subscribe for regular science videos: http://bit.ly/RiSubscRibe The Monty Hall problem became infamous in the 1990s where newspaper columnist and puzzle solver Marilyn vos Savant offered a solu
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Matchstick Dog

5 years ago / 789 views

If you solve this puzzle before the answer is given, you are the top-dog in the class. Congratulations! SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow CONNECT WITH CURIOSITY Facebook ➤ http://www.facebook.com/CuriosityShow
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Left-Facing Fish

5 years ago / 682 views

Deane and Rob present a matchstick problem concerning left-facing and right-facing fish. See if you can solve the problem before the answer is given. SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow CONNECT WITH CURIOSITY Fa
04:12 Popular
Window Puzzles

5 years ago / 731 views

Deane presents two window puzzles which depend on your ability to compare areas. SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow CONNECT WITH CURIOSITY Facebook ➤ http://www.facebook.com/CuriosityShow Twitter ➤ https://twit
05:39 Popular
Can You Solve A 5th Grade Problem From China? Find The Area Of ABCD

5 years ago / 803 views

Thanks to Eric from Miami for suggesting this problem and sending a solution! The diagram shows a quadrilateral ABCD with the values for some angles and the length of AB. Can you figure out the area of ABCD? Subscribe: https://www.youtube.com/user/MindYou
08:51 Popular
The Viral Balloon Puzzle - The REAL Answer Explained (Using Ph.D. Level Math)

5 years ago / 786 views

They say only geniuses can solve this puzzle, and this time they are correct. Thanks to all patrons! Special thanks to: Shrihari Puranik Yildiz Kabaran Kyle My blog post for this video https://wp.me/p6aMk-82U Sources https://puzzling.stackexchange.com/que
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Can you solve the Leonardo da Vinci riddle? - Tanya Khovanova

5 years ago / 1,007 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to Bonus Riddle: https://brilliant.org/tededautobiographical/ You’ve found Leonardo da Vinci’s secret vault, secured by a series of combination locks. Fortunately, your treasure map ha
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The Broom Riddle (Solution) ft. Kurt Hugo Schneider part 3/3

5 years ago / 511 views

Video 1 with the bowl riddle: https://youtu.be/z0JpgEOLezY Video 2 with the broom and some bonus riddles: https://youtu.be/_34bYpxK_OE Check out Kurt's channel! http://www.youtube.com/kurthugoschneider Three tricky riddles! See if you can solve the 2s rid
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Bowl Riddle Solution (Plus 2 BONUS riddles) ft. Kurt Hugo Schneider part 2/3

5 years ago / 738 views

First video with Bowl Riddle and two other riddles: https://youtu.be/z0JpgEOLezY Check out https://wix.com/go/physicsgirl to get started on your website! See if you can solve the next two riddles in this video: (1) the silent round riddle (2) the broom ri
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Can you solve the bowl riddle? ft. Kurt Hugo Schneider Part 1/3

5 years ago / 736 views

Answer to the bowl riddle: https://youtu.be/_34bYpxK_OE Three tricky riddles! See if you can solve (1) the bucket riddle (2) the clock puzzle (3) the bowl riddle! ft. musician and producer Kurt Hugo Schneider! Check out Kurt's channel! http://www.youtube.
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Can You Solve A Puzzle That Fooled Richard Feynman?

5 years ago / 724 views

What is the radius of the circle, in simplest terms involving a, b, and c? I read that even the great mind Richard Feynman made a mistake. Watch the video to learn the common mistake and what the correct answer is. Source Feynman story http://web.media.mi
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What Is The Area? "You Should Be Able To Solve This"

5 years ago / 528 views

Thanks to Reio in Romania for emailing me this fun problem! What is the area? This puzzle was shared with the tagline "you should be able to solve this." Solution to 5th grade Chinese challenge problem https://youtu.be/OuJQaxZvlYs My blog post for this vi
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Can You Solve The "MEANEST" SAT Test Question Ever?

5 years ago / 717 views

On the SAT exam, you have about 2 minutes to read and solve each math question. This one about averages can send you in a loop, unless you approach it systematically. In the video I also explain a shortcut to help you solve this type of problem quickly. S
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Can you solve the rogue AI riddle? - Dan Finkel

5 years ago / 978 views

Practice more problem-solving at https://brilliant.org/TedEd/ If you sign up for a FREE membership using the link above, Brilliant will email you the solution to the BONUS RIDDLE. A hostile artificial intelligence called NIM has taken over the world’s com
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Can you solve the Mondrian squares riddle? - Gordon Hamilton

6 years ago / 782 views

Practice more problem-solving at https://brilliant.org/TedEd/ Dutch artist Piet Mondrian’s abstract, rectangular paintings inspired mathematicians to create a two-fold challenge. Can you solve the puzzle and get to the lowest score possible? Gordon
05:20 Popular
Can you solve the giant cat army riddle? - Dan Finkel

6 years ago / 904 views

Practice more problem-solving at https://brilliant.org/TedEd/ Sign up to be emailed the solution to the bonus riddle: https://brilliant.org/tededm2s3/ The villainous Dr. Schrödinger has developed a growth ray and intends to create an army of giant cats to
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THAT IS HOW YOU CAN CONFUSE YOUR MATH TEACHER AT SCHOOL

6 years ago / 1,181 views

Learn how to draw prospective without a ruler, measure angles and figure out how many days there are in any given month with your hand! These and many others mind-blowing Math tricks are in this video! There are some GREAT tricks for young mathematicians!
05:26 Popular
Can you solve the wizard standoff riddle? - Dan Finkel

6 years ago / 1,040 views

Practice more problem-solving at https://brilliant.org/TedEd/ Sign up for free to receive the solution to the bonus riddle! You’ve been chosen as a champion to represent your wizarding house in a deadly duel against two rival magic schools. Your opponents
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18 MATH RIDDLES THAT EVEN YOUR MATH TEACHER WILL FAIL

6 years ago / 1,635 views

A great chance to challenge your math teacher! These 18 math riddles will trick and will make sweat even your math teacher: 00:14 - Easy riddle to warm you up for the main brain workout. Kids solve this in seconds! 00:46 - Riddle to test your ability to t
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Can you solve the seven planets riddle? - Edwin F. Meyer

6 years ago / 1,195 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to the bonus riddle mentioned at the end: https://brilliant.org/TedEdTitanic/ Your interstellar police squad has tracked a group of criminals to a cluster of seven planets. Now you mus
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Can you solve the dark coin riddle? - Lisa Winer

6 years ago / 1,281 views

Practice more problem-solving at https://brilliant.org/TedEd/ Solution to the bonus riddle mentioned at the end: https://brilliant.org/tededcoinflip You heard the travelers’ tales, you followed the maps, and now, you’ve finally located the dungeon contain
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03:36 Popular
90% people fail!! (How smart are you? - test with answers)

6 years ago / 1,517 views

Let me know your answers! - 10,000 comments = Happy Broccoli! ★★ For more Brain brocs... Subscribe to DB! ★★ This sequence of animal questions will likely mess you up... It's a type of creative IQ test that will test how smart you are. I didn't answer the
02:13 Popular
Crazy Math Trick: I will guess Your Age! (OLD 2016 version)

6 years ago / 1,079 views

Check here for the 2017 version: https://www.youtube.com/watch?v=PQjNF34H3Bs&feature=youtu.be ★★ For more broccolies like this... Subscribe to DB! ★★ I will guess your age! This is a crazy math trick that is likely to impress you and your friends too! You
05:19 Popular
Riddles: 5 "easy"... & one IMPOSSIBLE! (with answers)

6 years ago / 980 views

★★★★ Riddles and more... Subscribe to Daily Broccoli! ★★★★ This is a fun video with 5 supposedly "easy" riddles with answers, and one impossible question. I love these riddles, because they are clever and in fact not all that difficult. But still I wasn't
10:07 Popular
New IQ Test! (with answers)

6 years ago / 1,312 views

★★ More Broccoli = More IQ :DD (Please subscribe!!!) ★★ This IQ test is amazingly accurate. Check how many questions you got right and what it means in terms of your IQ. Are you smart? How intelligent are you? What is my IQ? This new IQ Test will tell you
02:13 Popular
Crazy Math Trick: I will guess Your Age! (2017 with answers)

6 years ago / 998 views

★★ For more broccolies like this... Subscribe to DB! ★★ I will guess your age! This is a crazy math trick that is likely to impress you and your friends too! You start with a RANDOM number and then end up with your Age and that number... pretty incredible
04:26 Popular
97% Fail... Test your EYES! (incl. secret message)

6 years ago / 815 views

★★ Secret message because... we reached + 278k SUBS!!!! ★★ Massive thank you! You are the best!! The überchallenge is to be able to find all the letters that are hidden in the images. ...if you see all 12 letters, you must have massively good eyes! This i
01:52 Popular
Three Solutions! Can You Find Them? (math trick with answers)

6 years ago / 1,212 views

★★ Please LIKE if you found at least ONE solution!! ★★ This is an impossible equation, because 6+4 is clearly not 4... BUT there are three solutions to this equation by moving just ONE matchstick. Can you find all three solutions? I am curious to see how
04:55 Popular
You will NOT know all of these sounds, I am SURE!! (with answers)

6 years ago / 1,020 views

★★ For more sound broccolies like this... Subscribe to DB! ★★ You will NOT know all of these sounds, I am SURE!! I would be incredibly surprised if anyone actually identifies all of these animal sounds... This is a listening test to see how well you know
05:58 Popular
Can You Crack This Four Card Code?

6 years ago / 796 views

A surprisingly tricky card riddle. You'll need to put your thinking caps on for this one. Hi! I'm Jade. I'm an Aussie with a Bachelor's degree in Applied Physics. After three years and over 100 lab sessions, I realized I'm terrible at experiments. So now
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9 Tricky Puzzles That Will Totally Blow Your Brain

6 years ago / 986 views

Once you show children’s puzzles toadults, most ofthem immediately get abrain freeze. Try to stretch your brain alittle and check ifyou can cope with questions from children’s books! Subscribe to Bright Side : https://goo.gl/rQTJZz -----------
04:47 Popular
Can you solve the egg drop riddle? - Yossi Elran

6 years ago / 1,175 views

Check out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/can-you-solve-the-egg-drop-riddle-yossi-elran The city has just opened its one-of-a-kind Faberge Egg Museum, with a single egg displayed on each floor o
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THESE POPULAR RIDDLES WILL BLOW YOUR MIND - Decipher Riddles & Brain Teasers

6 years ago / 1,476 views

THESE POPULAR RIDDLES WILL BLOW YOUR MIND - Decipher Riddles & Brain Teasers These popular riddles on logic can be solved by any kid or adult who has high IQ. These riddles with answers will always test your brain and make your brain scratch. There are th
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11 Simple Riddles That Most People Can't Solve

6 years ago / 1,566 views

12 tricky riddles you probably haven’t heard of. Try to find the right answers to check whether you’re a true genius! Subscribe to Bright Side : https://goo.gl/rQTJZz ----------------------------------------------------------------------------------------
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Brain Games: Can you outsmart these puzzles?

6 years ago / 609 views

Jason Silva, host of National Geographic's program "Brain Games," speaks to the "CBS This Morning" co-hosts about using experiments to challenge what we think we know about the brain.
02:48 Popular
Brain Teasers | Brain Games

6 years ago / 2,109 views

Comedian Ben Bailey is quizzing people's common sense with a few trick questions. Think you can't be fooled? Listen carefully and play along to find out how you fare. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About Brain Games: Using a series of experime
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Only a Genius Can Solve These Riddles in 2 Minutes

6 years ago / 1,074 views

Logic puzzles are good for people of all ages because they give our minds a chance to limber up. Can you solve each of them in 15 seconds? If so, you can consider yourself a genius (we aren’t – we couldn’t get the last one). Subscribe to Bright Side : htt
07:42 Popular
7 Visual Riddles to Test Your Brain Speed

6 years ago / 1,224 views

Only a true genius can solve these 7 visual riddles in less than a minute. Subscribe to Bright Side : https://goo.gl/rQTJZz ---------------------------------------------------------------------------------------- Our Social Media: Facebook: https://www.fa
10:44 Popular
18 Tricky Riddles That'll Stretch Your Brain

6 years ago / 4,309 views

Subscribe to Bright Side : https://goo.gl/rQTJZz For copyright matters please contact us at: welcome@brightside.me ---------------------------------------------------------------------------------------- We've prepared some fun brain teasers that kids cra
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Can you find the next number in this sequence? - Alex Gendler

7 years ago / 2,398 views

View full lesson: http://ed.ted.com/lessons/can-you-find-the-next-number-in-this-sequence-alex-gendler 1, 11, 21, 1211, 111221. These are the first five elements of a number sequence. Can you figure out what comes next? Alex Gendler reveals the answer and
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Can you solve the fish riddle? - Steve Wyborney

7 years ago / 1,379 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-fish-riddle-steve-wyborney As the cargo director on the maiden voyage of the S.S. Buoyant, you’ve agreed to transport several tanks containing the last specimens of an endangered fish species t
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The Train Bird Problem: What's Your Approach?

7 years ago / 636 views

The Rest Of Us on Patreon: https://www.patreon.com/TheRestOfUs The Rest Of Us on Twitter: http://twitter.com/TROUchannel The Rest Of Us T-Shirts and More: http://teespring.com/TheRestOfUsClothing
00:36
How to create chocolate out of nothing

7 years ago / 603 views

Discover my other interactive magic here: http://www.marianotomatis.com Wanna solve world hunger with magic? This video will teach you how to create chocolate out of nothing. Here the cyclic GIF: http://www.marianotomatis.it/blog/images/20130409a.gif To u
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Calculating the optimal sphere packing density: with oranges

7 years ago / 702 views

Check out the corresponding video I made with Steve Mould for his channel. https://youtu.be/O3RsDIWB7s0 Thomas Hales’s proof of the Kepler Conjecture. http://annals.math.princeton.edu/wp-content/uploads/annals-v162-n3-p01.pdf The Kepler Conjecture on wiki
05:07 Popular
Check your intuition: The birthday problem - David Knuffke

7 years ago / 909 views

View full lesson: http://ed.ted.com/lessons/check-your-intuition-the-birthday-problem-david-knuffke Imagine a group of people. How big do you think the group would have to be before there’s more than a 50% chance that two people in the group have the same
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Can you solve the pirate riddle? - Alex Gendler

7 years ago / 1,836 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-pirate-riddle-alex-gendler It’s a good day to be a pirate. Amaro and his four mateys – Bart, Charlotte, Daniel, and Eliza have struck gold – a chest with 100 coins. But now, they must divvy up
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Can you solve the virus riddle? - Lisa Winer

7 years ago / 1,457 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-virus-riddle-lisa-winer Your research team has found a prehistoric virus preserved in the permafrost and isolated it for study. After a late night working, you’re just closing up the lab when a
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How to Solve a Rubik's Cube | Full-Time Kid | PBS Parents

7 years ago / 979 views

Watch Mya [unofficially] break the world record for solving a Rubik's cube, blind-folded! You won't REALLY learn how to solve the puzzle , but you'll learn a neat trick to show your friends and family. Executive Producer: Danielle Steinberg Meet Mya! She'
01:51 Popular
Test your math IQ - Part 1

7 years ago / 842 views

Test your math IQ with this fun question. There are two 12 sided coins. Find the measure of the angle when the coins are side by side. Each side of the coin is equal length. My name is Chris and my passion is to teach math. Learning should never be a stru
01:07 Popular
The Easiest Brain Teaser You Might Get Wrong

7 years ago / 958 views

Try and solve the easiest brain teaser you might get wrong. The chicken costs $1.00 more than the egg, and together they cost a total of $1.06. How much does the egg cost? My name is Chris and my passion is to teach math. Learning should never be a strugg
01:27 Popular
The Easiest Brain Teaser that will rack your brain

7 years ago / 936 views

This is the easiest brain teaser that will rack your brain. 5 people can build 5 houses in 5 days. How long will it take 100 people to build 100 houses? My name is Chris and my passion is to teach math. Learning should never be a struggle which is why I m
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Can you solve the three gods riddle? - Alex Gendler

7 years ago / 1,310 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-three-gods-riddle-alex-gendler You and your team have crash-landed on an ancient planet. Can you appease the three alien overlords who rule it and get your team safely home? Created by logician
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Mind blowing brain teaser - Folding paper to the moon

7 years ago / 946 views

Can you solve this mind blowing brain teaser? How many times can you fold a piece a paper before it reaches the moon? Find out the solution in this brain teaser in this video. My name is Chris and my passion is to teach math. Learning should never be a st
04:33 Popular
Can you solve Zeno's paradox? - Brain Teaser

7 years ago / 1,651 views

Zeno's paradox is one of the most well know math puzzles in history. Is it possible to add an infinite amount of numbers and get an exact value? This is one example of Zeno's paradox. Try and solve this paradox and learn about the Greek philosopher Zeno i
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Are you smart enough to solve this simple brain teaser?

7 years ago / 799 views

This simple brain teaser is not so easy. A virus is doubling every singe day. On the 67th day the virus has reached its max population. When will the virus reach half of its max population. My name is Chris and my passion is to teach math. Learning should
03:51 Popular
Can You Solve This MIT Admissions Question? Geometry Problem, 1869

7 years ago / 970 views

The Massachusetts Institute of Technology (MIT) is one of the top ranked universities in the world. This question appeared on its admissions exam nearly 150 years ago. "The perpendicular dropped from the vertex of the right angle upon the hypotenuse divid
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Can you solve the burning stick riddle? ft Simone Giertz part 3/3

7 years ago / 693 views

How can you time 45 minutes with 2 sticks that each burn for one hour? Simone's channel: https://www.youtube.com/channel/UC3KEoMzNz8eYnwBC34RaKCQ First riddle video: https://www.youtube.com/watch?v=qplG78Guaa4 Second riddle video: https://youtu.be/ri49dTl
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The Boat/Rock Brainteaser ft Simone Giertz part 2/3

7 years ago / 713 views

Video on Simone's channel! https://www.youtube.com/watch?v=O3G9PuDZ_8c&t=40s Simone's channel: https://www.youtube.com/channel/UC3KEoMzNz8eYnwBC34RaKCQ First riddle video: https://www.youtube.com/watch?v=qplG78Guaa4 0:22 - riddle #1 - the falling wooden a
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Can you solve these physics riddles? ft Simone Giertz - Part 1/3

7 years ago / 1,194 views

Reading comments on Simone’s channel: https://www.youtube.com/watch?v=O3G9PuDZ_8c Check out Simone’s robots! https://www.youtube.com/simonegiertz Creator: Dianna Cowern Editor: Jabril Ashe Kyle Norby/ Dianna Cowern Thanks to Dan Walsh! Subscribe to Physic
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Trick Question - True or False

7 years ago / 890 views

Think you can answer this simple trick question? Does .9 repeating equal 1? Find the solution in this video. My name is Chris and my passion is to teach math. Learning should never be a struggle which is why I make all my videos as simple and fun as possi
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Easy Puzzle - But can you solve it?

7 years ago / 1,446 views

Solve this puzzle by cutting the piece of wood into two pieces. Both pieces must fit exactly into the hole. Can you solve this easy puzzle? Watch the video and find out. My name is Chris and my passion is to teach math. Learning should never be a struggle
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Can you solve the counterfeit coin riddle? - Jennifer Lu

7 years ago / 951 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-counterfeit-coin-riddle-jennifer-lu You’re the realm’s greatest mathematician, but ever since you criticized the Emperor’s tax laws, you’ve been locked in the dungeon. Luckily for you, one of t
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Can You Solve This 8th Grade Geometry Problem? 75% Got The Wrong Answer

7 years ago / 1,018 views

What is angle A in the star-shaped figure? This problem appeared on the 1999 AMC 8 test (intended for 8th grade students in the US). Approximately 75% of test-takers did not mark the correct response. Can you figure it out? Watch the video for a solution.
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Can You Solve The Missing Sock Puzzle?

7 years ago / 630 views

A statistician keeps a simple wardrobe. He only purchases pairs of black socks and white socks, and he keeps all of the socks in a pile in the drawer. Recently one of the socks was lost in the laundry. The socks have a mathematical property. If you select
06:18 Popular
Can You Solve The Diluted Wine Puzzle?

7 years ago / 777 views

A servant has a method to steal wine. He removes 3 cups from a barrel of wine and replaces it with 3 cups of water. The next day he wants more wine, so he does the same thing: he removes 3 cups from the same barrel (now with diluted wine) and replaces it
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Can you solve the airplane riddle? - Judd A. Schorr

7 years ago / 1,173 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-airplane-riddle-judd-a-schorr Professor Fukanō, the famous scientist, has embarked on a new challenge – piloting around the world in a plane of his own design. There’s just one problem: there's
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Can You Solve The Mind-Bending Self-Counting Sentence Riddle?

7 years ago / 967 views

"In this sentence, the number of occurrences of the digit 0 is __, of the digit 1 is __, of the digit 2 is __, of the digit 3 is __, of the digit 4 is __, of the digit 5 is __, of the digit 6 is __, of the digit 7 is __, of the digit 8 is __, and of the d
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Can You Solve This Grade 12 Geometry Problem From Australia? The Marshmallow Chocolate Puzzle

7 years ago / 936 views

A marshmallow has the shape of a cylinder with diameter 5 and height 3. A dessert is made with 24 marshmallows: there are two stacked layers of marshmallows, and each layer has 3 rows of 4 marshmallows. The gaps between the marshmallows are filled with ch
07:49 Popular
Can You Solve The Viral 9 = 72 Puzzle? The Correct Answer Explained

7 years ago / 1,090 views

This problem has been shared millions of times on Twitter/Facebook with the claim "99% fail" to solve it and that only a genius could find the correct answer. If 9 = 72, 8 = 56, 7 = 42, 6 = 30, 5 = 20, then 3 = ? In this video I explain what many people b
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Adults Are Arguing About This 3rd Grade Math Problem

7 years ago / 916 views

"If Sue runs around the track twice, and John runs around the track four times more than Sue, how many times does John run around the track?" This problem was given to 3rd graders. A parent disagreed with the answer the teacher was marking. After it was p
09:11 Popular
Can You Solve The Rectangle Ratio Puzzle? The Surprising Answer

7 years ago / 872 views

Start with a unit square (a rectangle with both sides equal to 1, call it R1). Attach a rectangle of area 1 to its right side, then attach a rectangle of area 1 to its top. The border of this new shape is another rectangle, call it R2. We can repeat the p
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The Day After Tomorrow Is Yesterday Riddle. Can You Solve It?

7 years ago / 718 views

This puzzle is popular on Facebook and many other sites. "When the day after tomorrow is yesterday, then today will be as far from Wednesday as today was from Wednesday when the day before yesterday was tomorrow. What day is today?" Can you solve this tri
07:47 Popular
Can You Solve The Probability The Newborn Is A Boy? Many Fail This Interview Question

7 years ago / 837 views

This problem has been asked in job interviews. On the morning of January 1, a hospital nursery has 3 boys and some number of girls. That night, a woman gives birth to a child, and the child is placed in the nursery. On January 2, a statistician conducts a
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Can you solve the river crossing riddle? - Lisa Winer

7 years ago / 1,838 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-river-crossing-riddle-lisa-winer As a wildfire rages through the grasslands, three lions and three wildebeest flee for their lives. To escape the inferno, they must cross over to the left bank
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Can You Solve This Harvard Admissions Question? Algebra Problem, 1869

7 years ago / 1,508 views

The Harvard admissions exam in 1869 included this algebra problem: "A man bought a watch, a chain, and a locket for $216. The watch and locket together cost three times as much as the chain, and the chain and locket together cost half as much as the watch
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Can You Solve This 6th Grade Geometry Problem From Singapore? The Area Of A "Claw"

7 years ago / 1,147 views

This problem was given to Primary 6 (age 11-12) students in Singapore. What is the area of the shaded region in the video, which consists of the region bounded by 4 quarter circles in a 3x3 grid of squares, and each square has a side length of 4? The shad
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Can You Solve The Alien Extinction Riddle? Hard Job Interview Question

7 years ago / 893 views

A single alien lands on Earth. Every day after that, each alien on Earth undergoes a transformation, which could be any of the four equally likely events: (a) the alien dies, (b) the alien does nothing, (c) the alien replicates itself (2 aliens total), (d
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Can You Solve The Viral 11x11 = 4 Puzzle? The Correct Answer Explained

7 years ago / 3,085 views

If 11x11=4 and 22x22=16, what is 33x33=? This puzzle has been shared with the claim that only geniuses can solve it. It has gotten millions of views on the internet and Facebook as people have debated the correct answer. In this video I present what many
04:53 Popular
Can you solve the prisoner boxes riddle? - Yossi Elran

7 years ago / 1,095 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-prisoner-boxes-riddle-yossi-elran Your favorite band is great at playing music...but not so great at being organized. They keep misplacing their instruments on tour, and it’s driving their mana
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02:06 Popular
Can You Solve The Viral Matchstick Puzzle 6 + 4 = 4?

7 years ago / 3,521 views

Can you fix 6 + 4 = 4 by moving 1 matchstick? This problem has gone viral on Facebook, with one post having over 400,000 shares. The ground rules are you cannot break a stick, it should be an equality (=), and you have to use 7-segment numbers (the block
03:04 Popular
Trick Question - Find the missing dollar

7 years ago / 769 views

Trick question! Three friends are overcharged for their hotel room. The hotel decides to refund the difference. After the hotel issues the refund one dollar has mysteriously disappeared. Where is the missing dollar? Find the solution to this trick questio
02:21 Popular
Trick Question - Test your math skills

7 years ago / 721 views

Find the maximum and minimum values of X in this trick question. Each value of X must satisfy the given inequality. Test your math skills and have fun with this trick question. My name is Chris and my passion is to teach math. Learning should never be a s
02:51 Popular
The Horse Horseshoe Boots Viral Algebra Problem - The Correct Answer Explained

7 years ago / 1,750 views

A lot of people are arguing over the correct answer to this algebra problem involving horses, horseshoes, and boots. A Facebook post with this problem has over 500,000 comments. Can you figure it out? In this video I explain the correct answer. Blog post:
05:33 Popular
What is 6÷2(1+2) = ? The Correct Answer Explained

7 years ago / 897 views

What is 6÷2(1+2) = ? This problem went viral and generated millions of comments on Facebook, Twitter, YouTube and social media sites. I explain how to get the correct answer by using the modern interpretation of the order of operations. I also explain how
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07:25 Popular
Can You Solve The Race To December 31 Riddle?

7 years ago / 730 views

Here's a fun game you can play with another person. The game starts on January 1. Each of two players takes turns calling out another date. The new date has to be a later date in the year with either the same month OR the same day (from January 1, a playe
08:05 Popular
Can You Solve The Hardest Easy Geometry Problem?

7 years ago / 1,288 views

In the figure, what is the value of angle x? This problem is known as Langley's Adventitious Angles. It is also known as the hardest easy geometry problem because it can be solved by elementary methods but it is notoriously difficult to work out. Can you
05:55 Popular
"Impossible" Logic Puzzle - How Many Liars Are At The Party?

7 years ago / 823 views

A party has 100 people who are either liars are truth tellers. Liars always lie and truth tellers always say the truth. After the party you ask each person, "How many truth tellers did you shake hands with?" Each person gives a different answer from 0 to
05:08
Can you solve this pier puzzle?

7 years ago / 700 views

This math brainteaser challenges you to find a simple, elegant solution to a seemingly complex problem! Can you figure it out? There are two towns near a shore. They want to build a pier on the shoreline with a path connecting the pier to each town. They
06:01 Popular
Can You Solve The Viral 1 + 4 = 5 Puzzle? The Correct Answer Explained

7 years ago / 11.9k views

This problem was shared on Facebook with the claim that only one in a thousand could figure it out. It went viral and generated over 3 million comments. Here is the problem. If 1 + 4 = 5, 2 + 5 = 12, 3 + 6 = 21, what is 8 + 11 = ? This video presents what
06:24 Popular
Can You Solve The Chameleon Riddle?

8 years ago / 1,031 views

A museum has 13 blue, 15 red, and 17 green chameleons. Whenever two chameleons of different colors meet, they both change into the color of the other chameleon (if blue and red met, for example, they would both turn green). As the chameleons mingle, is it
07:21 Popular
Can You Solve The Magical Pond Puzzle?

8 years ago / 1,043 views

(Same video with music: https://youtu.be/nF-Gpk0ZpRk) You visit a shrine that has 3 temples. Before each temple, you have to swim in a magical pond. Your path is pond-temple1-pond-temple2-pond-temple 3. Each time you swim, the pond magically triples the n
05:26
Can You Solve The Red Ball Lottery Puzzle?

8 years ago / 681 views

(Same video without the music: https://youtu.be/sz5oLEpc8xE) This problem involves 100 red balls, 100 blue balls, and 2 urns. First you distribute all the balls between the 2 urns, placing at least 1 ball in each urn. Next, you select an urn at random, an
04:08 Popular
Can You Solve The Passcode Riddle? - Ganesh Pai

8 years ago / 1,429 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-passcode-riddle-ganesh-pai In a dystopian world, your resistance group is humanity’s last hope. Unfortunately, you’ve all been captured by the tyrannical rulers and brought to the ancient colis
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01:49 Popular
This Matchstick Puzzle Is

8 years ago / 868 views

This classic matchstick/toothpick puzzle is making the rounds because it is supposedly "extremely hard" for adults. Can you make 3 squares by moving 3 matchsticks? You cannot break any of the sticks, the resulting squares must be of equal size, and each t
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07:10
TOUGH Interview Question - Ways To Give 11 Coins To 3 People

8 years ago / 623 views

How many ways can you divide 11 coins to 3 people? How many ways are there if each person has to get at least 1 coin? This puzzle is an example of a technical interview question. The video demonstrates the solution, which indicates the number of non-negat
06:57
When Is Christmas? Mentally Convert Date To Day Of The Week

8 years ago / 542 views

January 1, 2016 is a Friday. When will Christmas be in 2016? What about Christmas in 2055? You can do this in your head! Blog post (text explanation): http://wp.me/p6aMk-4qQ Doomsday Rule (previous video): https://www.youtube.com/watch?v=UsStBxY9STw Calcu
04:22 Popular
Impossible Algebra Problem

8 years ago / 1,255 views

This problem is making the rounds. Can you place numbers in the four boxes so all the equations are true? Blog post (text/image explanation): http://wp.me/p6aMk-4up If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecis
03:25 Popular
Can You Solve This? AA + BB + CC = ABC

8 years ago / 2,503 views

If AA + BB + CC = ABC, what are the values of A, B, and C? All the digits are distinct and positive. Watch the video for a solution. Blog (text explanation): http://wp.me/p6aMk-4Cm If you like my videos, you can support me at Patreon: http://www.patreon.c
02:57 Popular
Viral Facebook Math Problem

8 years ago / 1,307 views

This problem has over 2 million comments on Facebook and is getting coverage in mainstream media and blogs. Can you figure out this Facebook fruit algebra puzzle involving apples, bananas, and coconuts? The video presents what many people consider to be t
06:24 Popular
The Seemingly Impossible Escape Logic Puzzle

8 years ago / 1,461 views

An evil logician takes Alice and Bob captive. They have a chance to escape if they can deduce the total number of trees in the prison. Can they figure it out? Source of puzzle wu: riddles forum https://www.ocf.berkeley.edu/~wwu/cgi-bin/yabb/YaBB.cgi?board
01:18 Popular
Can You Make 4 Triangles From 6 Matches?

8 years ago / 999 views

Can you use 6 matches to make 4 triangles of equal size and equal shape? This is harder than it sounds! Give it a try before watching the video for a solution. If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions
07:52 Popular
Find The 10 Digit Number Classic Puzzle And Solution

8 years ago / 913 views

I'm thinking of a 10 digit number that uses the each digit 0 to 9 exactly once and where the number formed by the first n digits is divisible by n. What could my number be? The video explains how to find the answer using tests for divisibility. Blog post:
01:57 Popular
I Will Read Your Mind - Math Magic Trick

8 years ago / 1,269 views

Pick a 2 digit number. Got it? Now and add up the digits. Subtract that from your original number. Look up the resulting number in the table. Can I figure out the symbol you are looking at? This video predicts your symbol and explains why this math trick
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03:33 Popular
Can You Solve This Intelligence Test? Viral Facebook Puzzle

8 years ago / 761 views

If 6 + 4 = 210, and 9 + 2 = 711, what is the rule to combine numbers? This "intelligence test" has been shared more than 3 million times on Facebook. On Twitter people claim solving it means you have an IQ of more than 150 (genius level). In this video I
04:52 Popular
Can You Solve The Two Rope Puzzle?

8 years ago / 728 views

You have two ropes and a lighter. Each rope burns in 60 minutes, but the ropes do not burn at a constant rate. How can you measure 45 minutes by burning the ropes? Some of you might have heard this problem before. If so, try this variation: how can you me
08:27
Can You Solve The 3 Cards Riddle?

8 years ago / 690 views

There are 3 cards in this problem. One card is blue on both sides, another is red on both sides, and the last is red on one side and blue on the other. The cards are put in a bag and I pick one at random. Without looking at the colors on the card, I place
02:57 Popular
Can You Solve This Crazy Equation? Ramanujan's Radical Brain Teaser

8 years ago / 1,111 views

In 1911, Srinivasa Ramanujan posed this problem involving an infinite nested radical (a never-ending expression that has square roots inside of square roots). Can you figure out how to simplify the equation? The video presents an intuitive solution. Techn
03:09
Can You Solve The Marriage Logic Problem? 80% Fail

8 years ago / 685 views

Surveys have found 80 percent get this logic problem wrong. Alice is looking at Bob, and Bob is looking at Charlie. Alice is married; Charlie is not. Is a married person looking at an unmarried person? Answer choices are A) Yes, B) No, and C) Cannot be de
05:09 Popular
Can You Solve The Snake Eyes Probability Riddle?

8 years ago / 864 views

You close your eyes and roll a pair of dice. The casino dealer announces that at least one of the rolls is showing a 1.What is the probability that both dice are showing a 1? Watch the video for the solution. (Snake eyes is a term for rolling a pair of 1s
02:37 Popular
Adults Stumped By Maths Questions For 15 Year Olds. Can You Solve Them?

8 years ago / 813 views

How hard are math tests? A survey asked 2,000 UK adults to answer sample GCSE test questions intended for 15 year old students. On average, the survey questions were missed by about 40% of adults. Can you solve them? The video presents 2 questions that ma
04:13 Popular
Adults Stumped By Geometry Problems For 10 Year Olds. Can You Solve Them?

8 years ago / 862 views

These homework problems were given to 10 year old children (Year 5) in England (Glossop, Derbyshire) and they were posted to Facebook when some adults found them to be difficult. One person claimed the problems were impossible to solve. Can you figure the
03:28 Popular
Flower Math Problem - Adults Stumped By Question For Kids In China

8 years ago / 1,417 views

This problem is said to come from a test given to a Chinese kindergarten class (5 year olds). It was posted online and caused a lot of debate as adults were stumped about the correct answer, some saying it is impossible. Can you figure it out? This video
04:01 Popular
Can You Solve The Control Room Riddle? - Dennis Shasha

8 years ago / 1,096 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-control-room-riddle-dennis-shasha As your country's top spy, you must infiltrate the headquarters of the evil syndicate, find the secret control panel, and deactivate their death ray. But your
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05:05 Popular
Try This April Fools' Trick! (Mystery Math)

8 years ago / 829 views

Here's a simple trick you can play on your friends!
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03:50 Popular
Can You Solve The Locker Riddle? - Lisa Winer

8 years ago / 2,037 views

View full lesson: http://ed.ted.com/lessons/can-you-solve-the-locker-riddle-lisa-winer Your rich, eccentric uncle just passed away, and you and your 99 nasty relatives have been invited to the reading of his will. He wanted to leave all of his money to yo
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