Brain Teasers

05:20
Can you steal the most powerful wand in the wizarding world?  Dan Finkel
/ 35 viewsPractice more problemsolving at https://brilliant.org/TedEdThe 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)
/ 33 viewsMost 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
/ 134 viewsYou 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 bestworst 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
/ 62 viewsThe 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
/ 61 viewsLearn 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
/ 138 viewsPractice more problemsolving at https://brilliant.org/TedEdBad 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
/ 172 viewsPractice more problemsolving at https://brilliant.org/TedEdAs 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
/ 94 viewsYou 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
/ 84 viewsPractice more problemsolving at https://brilliant.org/TedEdYour 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
/ 142 viewsPractice more problemsolving at https://brilliant.org/TedEdThey 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 preflight test

06:19
Can you solve the rogue submarine riddle?  Alex Rosenthal
/ 138 viewsPractice more problemsolving at https://brilliant.org/TedEdSmuggling 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
/ 145 viewsHow 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
/ 201 viewsPractice more problemsolving at https://brilliant.org/TedEdOnce 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
/ 224 viewsThe 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
/ 197 viewsPractice more problemsolving at https://brilliant.org/TedEdYou 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
/ 303 viewsGet 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

10:06
Puzzles For Geniuses Only  How Smart Are You?
/ 140 viewsIn this puzzles for geniuses only quiz, you will be asked a series of 10 questions. How many can you answer? But be warned, these are not easy!

05:36
Can you solve the Trojan War riddle?  Dennis E. Shasha
/ 476 viewsPractice more problemsolving at https://brilliant.org/TedEdOn 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
/ 230 viewsIf 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
The Easiest Problem Everyone Gets Wrong
/ 244 viewsWatch 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
/ 294 viewsPractice more problemsolving at https://brilliant.org/TedEdAccording 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
Am I Smarter Than a 9 Year Old ?
/ 443 viewsGet 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
/ 216 viewsPractice more problemsolving at https://brilliant.org/TedEdAfter 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
/ 402 viewsPractice more problemsolving 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
/ 305 viewsPractice more problemsolving 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
/ 330 viewsPractice more problemsolving 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
/ 299 viewsPuzzle 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
/ 346 viewsPractice more problemsolving 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
/ 307 viewsCan 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?
/ 210 viewsCan 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
/ 274 viewsPractice more problemsolving 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
/ 854 viewsPractice more problemsolving 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
/ 367 viewsPractice more problemsolving 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 !
/ 707 viewsAzzyland  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
/ 372 viewsPractice more problemsolving 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 NoSide gang. The only way to get him back is

04:22
Everything changed when the fire crystal got stolen  Alex Gendler
/ 332 viewsThis 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
/ 393 viewsPractice more problemsolving 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
/ 344 viewsSolve 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
/ 492 viewsAs 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
Who's the Thief?  TABLETOP MYSTERIES
/ 457 viewsCan 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
/ 397 viewsA 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
/ 297 viewsDetective 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
/ 389 viewsAn 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
/ 373 viewsWatch 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
/ 363 viewsWatch 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
/ 378 viewsWatch 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
The Game You Win By Losing (Parrondo's Paradox)
/ 571 viewsWatch my collab with Donut Media: https://youtu.be/1RNc2hpHP8Thanks 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
/ 352 viewsWatch 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
/ 1,305 viewsWatch 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
/ 446 viewsWatch 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
/ 394 viewsWatch 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
Ant On A Rubber Rope Paradox
/ 509 viewsWatch 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
/ 356 viewsIf 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/clacksthanks Stay tuned for more: ht

10:42 Popular
Top 10 Puzzles Only The Smartest 2% Can Solve
/ 1,236 viewsThese 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!
/ 801 views99% 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
/ 835 viewsIf 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
/ 417 viewsIt's time for Schneck and Eck to hook their suspects up to a lie detector test! They also find an eyewitness 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
/ 1,048 viewsA 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
/ 429 viewsCan You Solve this Vampire Riddle? See if you have the smarts to solve this bloodsucking 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
Can you solve the jail break riddle?  Dan Finkel
/ 650 viewsYou’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
Can You Solve the Evil Librarian's Deadly Riddle?  NUMBER CRUSHERS
/ 661 viewsCan You Solve the Evil Librarian's Deadly Riddle? Izzy challenges you to solve three mindboggling 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
/ 961 viewsHow 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
Can You Guess Who's Lying? 3 Logic Riddles to Train Your Problem Solving Skills
/ 578 viewsGet 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

03:52
Can you solve the vampire hunter riddle?  Dan Finkel
/ 474 viewsYou’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
Will You Survive the Zombie Apocalypse?!  NUMBER CRUSHERS
/ 616 viewsWill You Survive the Zombie Apocalypse?! MathWiz 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
/ 930 viewsSign up for our newsletter and never miss an animation: http://bit.ly/TEDEdNewsletter View full lesson: https://ed.ted.com/lessons/canyousolvethemultiplyingrabbitsriddlealexgendler After years of experiments, you’ve finally created the pets of the

04:32
Can you solve the time travel riddle?  Dan Finkel
/ 600 viewsPractice more problemsolving 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
/ 897 viewsPractice more problemsolving 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
/ 1,222 viewsPractice more problemsolving 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
Can you solve the stolen rubies riddle?  Dennis Shasha
/ 573 viewsPractice more problemsolving 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 roboants riddle?  Dan Finkel
/ 763 viewsPractice more problemsolving at https://brilliant.org/TedEd/ Solution to Bonus Riddle: https://brilliant.org/TedEdRoboAnts/ The good news is that your experimental roboants 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
/ 769 viewsPractice more problemsolving 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

04:47
Puzzles: 5 "easy"... and one impossible!! (with answers)
/ 518 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
Most People Fail!! (IQ test with answers)
/ 513 viewsMost 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)
/ 2,183 viewsThese 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 noone 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
/ 814 viewsPractice more problemsolving 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

07:45
The Monty Hall Problem  Christmas Lectures with Ian Stewart
/ 400 viewsIan 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

01:34
Matchstick Dog
/ 681 viewsIf you solve this puzzle before the answer is given, you are the topdog in the class. Congratulations! SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow CONNECT WITH CURIOSITY Facebook ➤ http://www.facebook.com/CuriosityShow

01:30
LeftFacing Fish
/ 564 viewsDeane and Rob present a matchstick problem concerning leftfacing and rightfacing 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
Window Puzzles
/ 626 viewsDeane 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
Can You Solve A 5th Grade Problem From China? Find The Area Of ABCD
/ 679 viewsThanks 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
The Viral Balloon Puzzle  The REAL Answer Explained (Using Ph.D. Level Math)
/ 643 viewsThey 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/p6aMk82U Sources https://puzzling.stackexchange.com/que

05:08 Popular
Can you solve the Leonardo da Vinci riddle?  Tanya Khovanova
/ 706 viewsPractice more problemsolving 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

06:13
The Broom Riddle (Solution) ft. Kurt Hugo Schneider part 3/3
/ 393 viewsVideo 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

06:24
Bowl Riddle Solution (Plus 2 BONUS riddles) ft. Kurt Hugo Schneider part 2/3
/ 588 viewsFirst 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

06:43
Can you solve the bowl riddle? ft. Kurt Hugo Schneider Part 1/3
/ 539 viewsAnswer 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.

03:21
Can You Solve A Puzzle That Fooled Richard Feynman?
/ 571 viewsWhat 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

05:48
What Is The Area? "You Should Be Able To Solve This"
/ 404 viewsThanks 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

05:52
Can You Solve The "MEANEST" SAT Test Question Ever?
/ 582 viewsOn 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

05:13 Popular
Can you solve the rogue AI riddle?  Dan Finkel
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04:46
Can you solve the Mondrian squares riddle?  Gordon Hamilton
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05:20
Can you solve the giant cat army riddle?  Dan Finkel
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11:11 Popular
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05:26 Popular
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13:55 Popular
18 MATH RIDDLES THAT EVEN YOUR MATH TEACHER WILL FAIL
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Can you solve the seven planets riddle?  Edwin F. Meyer
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Can you solve the dark coin riddle?  Lisa Winer
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90% people fail!! (How smart are you?  test with answers)
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02:13 Popular
Crazy Math Trick: I will guess Your Age! (OLD 2016 version)
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05:19 Popular
Riddles: 5 "easy"... & one IMPOSSIBLE! (with answers)
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10:07 Popular
New IQ Test! (with answers)
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02:13 Popular
Crazy Math Trick: I will guess Your Age! (2017 with answers)
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04:26
97% Fail... Test your EYES! (incl. secret message)
/ 678 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)
/ 923 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)
/ 713 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
Can You Crack This Four Card Code?
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05:27 Popular
9 Tricky Puzzles That Will Totally Blow Your Brain
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04:47 Popular
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THESE POPULAR RIDDLES WILL BLOW YOUR MIND  Decipher Riddles & Brain Teasers
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11 Simple Riddles That Most People Can't Solve
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Brain Games: Can you outsmart these puzzles?
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02:48 Popular
Brain Teasers  Brain Games
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06:35 Popular
Only a Genius Can Solve These Riddles in 2 Minutes
/ 846 viewsLogic 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
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10:44 Popular
18 Tricky Riddles That'll Stretch Your Brain
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04:01 Popular
Can you find the next number in this sequence?  Alex Gendler
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04:50 Popular
Can you solve the fish riddle?  Steve Wyborney
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The Train Bird Problem: What's Your Approach?
/ 544 viewsThe Rest Of Us on Patreon: https://www.patreon.com/TheRestOfUs The Rest Of Us on Twitter: http://twitter.com/TROUchannel The Rest Of Us TShirts and More: http://teespring.com/TheRestOfUsClothing

00:36
How to create chocolate out of nothing
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22:41
Calculating the optimal sphere packing density: with oranges
/ 542 viewsCheck 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/wpcontent/uploads/annalsv162n3p01.pdf The Kepler Conjecture on wiki

05:07 Popular
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05:24 Popular
Can you solve the pirate riddle?  Alex Gendler
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05:13 Popular
Can you solve the virus riddle?  Lisa Winer
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01:52 Popular
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01:51
Test your math IQ  Part 1
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01:07 Popular
The Easiest Brain Teaser You Might Get Wrong
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01:27 Popular
The Easiest Brain Teaser that will rack your brain
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30:07
Mind Bending Math: Riddles and Paradoxes
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04:54 Popular
Can you solve the three gods riddle?  Alex Gendler
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03:29 Popular
Mind blowing brain teaser  Folding paper to the moon
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04:33 Popular
Can you solve Zeno's paradox?  Brain Teaser
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01:36
Are you smart enough to solve this simple brain teaser?
/ 666 viewsThis 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
/ 805 viewsThe 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

08:04
Can you solve the burning stick riddle? ft Simone Giertz part 3/3
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06:31
The Boat/Rock Brainteaser ft Simone Giertz part 2/3
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04:09 Popular
Can you solve these physics riddles? ft Simone Giertz  Part 1/3
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02:41 Popular
Trick Question  True or False
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01:32 Popular
Easy Puzzle  But can you solve it?
/ 1,118 viewsSolve 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

04:35 Popular
Can you solve the counterfeit coin riddle?  Jennifer Lu
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03:16 Popular
Can You Solve This 8th Grade Geometry Problem? 75% Got The Wrong Answer
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06:24
Can You Solve The Missing Sock Puzzle?
/ 502 viewsA 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
Can You Solve The Diluted Wine Puzzle?
/ 604 viewsA 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

04:38 Popular
Can you solve the airplane riddle?  Judd A. Schorr
/ 901 viewsView full lesson: http://ed.ted.com/lessons/canyousolvetheairplaneriddlejuddaschorr 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

05:27 Popular
Can You Solve The MindBending SelfCounting Sentence Riddle?
/ 819 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

04:13
Can You Solve This Grade 12 Geometry Problem From Australia? The Marshmallow Chocolate Puzzle
/ 688 viewsA 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
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04:30 Popular
Adults Are Arguing About This 3rd Grade Math Problem
/ 771 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
Can You Solve The Rectangle Ratio Puzzle? The Surprising Answer
/ 695 viewsStart 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

02:45
The Day After Tomorrow Is Yesterday Riddle. Can You Solve It?
/ 583 viewsThis 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
Can You Solve The Probability The Newborn Is A Boy? Many Fail This Interview Question
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04:19 Popular
Can you solve the river crossing riddle?  Lisa Winer
/ 1,480 viewsView full lesson: http://ed.ted.com/lessons/canyousolvetherivercrossingriddlelisawiner 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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03:48 Popular
Can You Solve This Harvard Admissions Question? Algebra Problem, 1869
/ 1,144 viewsThe 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

05:57 Popular
Can You Solve This 6th Grade Geometry Problem From Singapore? The Area Of A "Claw"
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07:39 Popular
Can You Solve The Alien Extinction Riddle? Hard Job Interview Question
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11:27 Popular
Can You Solve The Viral 11x11 = 4 Puzzle? The Correct Answer Explained
/ 2,100 viewsIf 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
/ 915 viewsView full lesson: http://ed.ted.com/lessons/canyousolvetheprisonerboxesriddleyossielran 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?
/ 2,543 viewsCan 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 7segment numbers (the block

03:04
Trick Question  Find the missing dollar
/ 657 viewsTrick 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
Trick Question  Test your math skills
/ 610 viewsFind 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
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05:33 Popular
What is 6÷2(1+2) = ? The Correct Answer Explained
/ 773 viewsWhat 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
Can You Solve The Race To December 31 Riddle?
/ 594 viewsHere'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?
/ 1,052 viewsIn 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
"Impossible" Logic Puzzle  How Many Liars Are At The Party?
/ 679 viewsA 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?
/ 556 viewsThis 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
/ 9,098 viewsThis 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?
/ 765 viewsA 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?
/ 863 views(Same video with music: https://youtu.be/nFGpk0ZpRk) You visit a shrine that has 3 temples. Before each temple, you have to swim in a magical pond. Your path is pondtemple1pondtemple2pondtemple 3. Each time you swim, the pond magically triples the n

05:26
Can You Solve The Red Ball Lottery Puzzle?
/ 557 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
/ 1,231 viewsView full lesson: http://ed.ted.com/lessons/canyousolvethepasscoderiddleganeshpai 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
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07:10
TOUGH Interview Question  Ways To Give 11 Coins To 3 People
/ 515 viewsHow 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 nonnegat

06:57
When Is Christmas? Mentally Convert Date To Day Of The Week
/ 456 viewsJanuary 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/p6aMk4qQ Doomsday Rule (previous video): https://www.youtube.com/watch?v=UsStBxY9STw Calcu

04:22 Popular
Impossible Algebra Problem
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03:25 Popular
Can You Solve This? AA + BB + CC = ABC
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02:57 Popular
Viral Facebook Math Problem
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06:24 Popular
The Seemingly Impossible Escape Logic Puzzle
/ 1,255 viewsAn 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/cgibin/yabb/YaBB.cgi?board

01:18 Popular
Can You Make 4 Triangles From 6 Matches?
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07:52 Popular
Find The 10 Digit Number Classic Puzzle And Solution
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01:57 Popular
I Will Read Your Mind  Math Magic Trick
/ 1,032 viewsPick 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
Can You Solve This Intelligence Test? Viral Facebook Puzzle
/ 596 viewsIf 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
Can You Solve The Two Rope Puzzle?
/ 577 viewsYou 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?
/ 569 viewsThere 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
/ 946 viewsIn 1911, Srinivasa Ramanujan posed this problem involving an infinite nested radical (a neverending 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
/ 585 viewsSurveys 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?
/ 711 viewsYou 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
Adults Stumped By Maths Questions For 15 Year Olds. Can You Solve Them?
/ 665 viewsHow 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?
/ 707 viewsThese 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
/ 1,168 viewsThis 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
/ 901 viewsView full lesson: http://ed.ted.com/lessons/canyousolvethecontrolroomriddledennisshasha 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)
/ 704 viewsHere'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
/ 1,669 viewsView full lesson: http://ed.ted.com/lessons/canyousolvethelockerriddlelisawiner 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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03:56
Mind Reading With Numbers
/ 649 viewsWhen someone is thinking of any number between 1 and 1000, Deane shows how to find that number with just 10 questions. It may seem like mind reading, but it is really logic. SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow C
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01:32
Restaurant Puzzle Strange Code
/ 504 viewsDeane and Rob decipher a coded message left in a restaurant. SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow CONNECT WITH CURIOSITY Facebook ➤ http://www.facebook.com/CuriosityShow Twitter ➤ https://twitter.com/CuriositySho

04:31 Popular
Can You Solve The Frog Riddle?  Derek Abbott
/ 1,352 viewsView full lesson: http://ed.ted.com/lessons/canyousolvethefrogriddlederekabbott You’re stranded in a rainforest, and you’ve eaten a poisonous mushroom. To save your life, you need an antidote excreted by a certain species of frog. Unfortunately, on
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04:13 Popular
Can You Solve The Temple Riddle?  Dennis E. Shasha
/ 859 viewsView full lesson: http://ed.ted.com/lessons/canyousolvethetempleriddledenniseshasha Your expedition finally stands at the heart of the ancient temple. But as you study the inscriptions in the darkness, two wisps of green smoke burst forth. The wal

03:10
Don't Checkmate  Brain Teaser
/ 686 viewsDon't checkmate the black king. In this brain teaser you must find one move for white which will not result in immediate checkmate for the black king. I also have a bunch of other fun brain teasers as well. My name is Chris and my passion is to teach math

02:04 Popular
Guess The Diagonal  Brain Teaser
/ 901 viewsTry to solve this brain teaser in less than a minute. You must guess the diagonal inside of the circle. There is enough information given which allows you to find the length of the diagonal in less than a minute. My name is Chris and my passion is to teac

04:09 Popular
Counterfeit Coins  Brain Teaser
/ 744 viewsFind the counterfeit coins in one of the eight bags! You may only use the weight scale once in this brain teaser. How do you know which bag has the counterfeit coins? I also have a bunch of other fun brain teasers as well. Heaven and hell  Brain Teaser h

01:51 Popular
Crossing The River  Brain Teaser
/ 813 viewsTry to solve this fun brain teaser. Cross the river with all of the zombies and humans. The boat can only fit two at a time. Also there can never be more zombies than humans. My name is Chris and my passion is to teach math. Learning should never be a str

06:35 Popular
Bisecting Yin And Yang  Brain Teaser
/ 750 viewsCan you bisect yin and yang using a straight line? Find the solution to this brain teaser in this video. I also have a bunch of other fun brain teasers as well. Heaven and hell  Brain Teaser https://www.youtube.com/watch?v=YOgKI0HWCnA Two burning ropes 