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  • 02:51 The Horse Horseshoe Boots Viral Algebra Problem - The Correct Answer Explained

    The Horse Horseshoe Boots Viral Algebra Problem - The Correct Answer Explained

    587 views / 1 likes - added

    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:

  • 02:06 Can You Solve The Viral Matchstick Puzzle 6 + 4 = 4?

    Can You Solve The Viral Matchstick Puzzle 6 + 4 = 4?

    469 views / 0 likes - added

    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

  • 11:27 Can You Solve The Viral 11x11 = 4 Puzzle? The Correct Answer Explained

    Can You Solve The Viral 11x11 = 4 Puzzle? The Correct Answer Explained

    609 views / 1 likes - added

    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

  • 07:39 Can You Solve The Alien Extinction Riddle? Hard Job Interview Question

    Can You Solve The Alien Extinction Riddle? Hard Job Interview Question

    341 views / 0 likes - added

    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

  • 11:57 The Wallis Formula For π

    The Wallis Formula For π

    186 views / 0 likes - added

    Start with the pair of fractions (2/1)(2/3). Now increment each number by 2 to get the pair of fractions (4/3)(4/5). Repeat this to get the next pair, and repeat this infinitely many times. If you then multiply all the fractions, you get a marvelous value

  • 07:40 Can You Solve The 21 Flags Game From Survivor?

    Can You Solve The 21 Flags Game From Survivor?

    256 views / 0 likes - added

    Contestants on the TV show "Survivor" faced off in a series of challenges for a grand prize of $1 million. Most of the challenges were physical like hiking many miles or diving underwater. But one challenge was mathematical. The game had 21 flags and cont

  • 05:57 Can You Solve This 6th Grade Geometry Problem From Singapore? The Area Of A "Claw"

    Can You Solve This 6th Grade Geometry Problem From Singapore? The Area Of A "Claw"

    510 views / 1 likes - added

    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

  • 03:48 Can You Solve This Harvard Admissions Question? Algebra Problem, 1869

    Can You Solve This Harvard Admissions Question? Algebra Problem, 1869

    325 views / 0 likes - added

    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

  • 03:54 What's The Best Soup Can Size? The Optimal Cylinder Puzzle

    What's The Best Soup Can Size? The Optimal Cylinder Puzzle

    237 views / 0 likes - added

    A cylindrical can with volume V can be made in different ways. The cylinder can be wide and short (large radius and small height), or it can be narrower and taller (small radius and larger height). Which shape uses the least material? That is, which can h

  • 07:47 Can You Solve The Probability The Newborn Is A Boy? Many Fail This Interview Question

    Can You Solve The Probability The Newborn Is A Boy? Many Fail This Interview Question

    334 views / 0 likes - added

    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

  • 02:45 The Day After Tomorrow Is Yesterday Riddle. Can You Solve It?

    The Day After Tomorrow Is Yesterday Riddle. Can You Solve It?

    292 views / 0 likes - added

    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

  • 09:11 Can You Solve The Rectangle Ratio Puzzle? The Surprising Answer

    Can You Solve The Rectangle Ratio Puzzle? The Surprising Answer

    340 views / 0 likes - added

    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

  • 04:30 Adults Are Arguing About This 3rd Grade Math Problem

    Adults Are Arguing About This 3rd Grade Math Problem

    310 views / 0 likes - added

    "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

  • 07:49 Can You Solve The Viral 9 = 72 Puzzle? The Correct Answer Explained

    Can You Solve The Viral 9 = 72 Puzzle? The Correct Answer Explained

    415 views / 0 likes - added

    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

  • 04:13 Can You Solve This Grade 12 Geometry Problem From Australia? The Marshmallow Chocolate Puzzle

    Can You Solve This Grade 12 Geometry Problem From Australia? The Marshmallow Chocolate Puzzle

    278 views / 0 likes - added

    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

  • 05:27 Can You Solve The Mind-Bending Self-Counting Sentence Riddle?

    Can You Solve The Mind-Bending Self-Counting Sentence Riddle?

    404 views / 0 likes - added

    "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

  • 06:18 Can You Solve The Diluted Wine Puzzle?

    Can You Solve The Diluted Wine Puzzle?

    254 views / 1 likes - added

    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

  • 06:24 Can You Solve The Missing Sock Puzzle?

    Can You Solve The Missing Sock Puzzle?

    230 views / 0 likes - added

    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

  • 03:16 Can You Solve This 8th Grade Geometry Problem? 75% Got The Wrong Answer

    Can You Solve This 8th Grade Geometry Problem? 75% Got The Wrong Answer

    268 views / 0 likes - added

    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.

  • 03:51 Can You Solve This MIT Admissions Question? Geometry Problem, 1869

    Can You Solve This MIT Admissions Question? Geometry Problem, 1869

    320 views / 0 likes - added

    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

  • 06:34 How Will Earth Change If All the Ice Melts?

    How Will Earth Change If All the Ice Melts?

    177 views / 0 likes - added

    Seeing An Inconvenient Sequel is taking action, get tickets to see it in select theaters now & everywhere Aug. 4th: https://fandan.co/2ucigMW #BeInconvenient Please Subscribe: http://bit.ly/2dB7VTO Patreon: https://www.patreon.com/RealLifeLore Music is by

  • 05:29 This AI Doesn’t Need Any Help from Humans

    This AI Doesn’t Need Any Help from Humans

    148 views / 0 likes - added

    Scientists have developed a new AI that can teach itself how to be the master of an ancient board game. We're conducting a survey of our viewers! If you have time, please give us feedback: https://www.surveymonkey.com/r/SciShowSurvey2017 Hosted by: Stefan

  • 03:00 Multiply Numbers By Drawing Lines

    Multiply Numbers By Drawing Lines

    279 views / 0 likes - added

    Gow to multiply numbers by drawing lines. Get the Multiply By Lines Book! https://www.amazon.com/gp/product/1500866148/ If you like my videos, you can support me at Patreon: http://www.patreon.com/mindyourdecisions Connect on social media. I update each s

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  • 05:00 Dinosaurs Had a Bloodsucking Enemy

    Dinosaurs Had a Bloodsucking Enemy

    226 views / 0 likes - added

    This week, scientists revealed a sample of amber containing an extinct tick that fed on dinosaurs. Unfortunately, we can't take a blood sample from it and make Jurassic Park a reality, but it can still tell us a lot about how dinosaurs (and their parasite

  • 04:38 The Trick to Not Freezing During Hibernation

    The Trick to Not Freezing During Hibernation

    199 views / 0 likes - added

    You may wish that you could pack on a few pounds and sleep the next few months away, and scientists are one step closer to understanding how some animals are capable of doing this. If you want to learn more about ancient animals or paleontological science

  • 03:47 What Is The Most Dangerous Sport In The World?

    What Is The Most Dangerous Sport In The World?

    236 views / 0 likes - added

    Sports can be deadly - what is the most dangerous sport?! Subscribe, it's free! http://bit.ly/asapsci Created by: Mitchell Moffit and Gregory Brown Written by: Tharsan Kana, Rachel Salt, Mitch Moffit & Greg Brown Illustrated by: Max Simmons Edited by: Sel

  • 08:04 That Time It Rained for Two Million Years

    That Time It Rained for Two Million Years

    428 views / 2 likes - added

    Check out our NEW POSTER: https://store.dftba.com/products/eons-poster At the beginning of the Triassic Period, with the continents locked together from pole-to-pole in the supercontinent of Pangea, the world is hot, flat, and very, very dry. But then 234

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  • 10:19 When Fish Wore Armor

    When Fish Wore Armor

    132 views / 0 likes - added

    Check out Hot Mess: https://www.youtube.com/channel/UCsaEBhRsI6tmmz12fkSEYdw 420 million years ago, some fish were more medieval. They wore armor, sometimes made of big plates, and sometimes made of interlocking scales. But that armor may actually have se

  • 14:53 THE SCUTOID: did scientists discover a new shape?

    THE SCUTOID: did scientists discover a new shape?

    162 views / 0 likes - added

    Read the Nature paper for yourself: "Scutoids are a geometrical solution to three-dimensional packing of epithelia" https://www.nature.com/articles/s41467-018-05376-1 Thanks to Laura and Clara for helping me with the video! You can download Laura's model

  • 07:00 What sounds did dinosaurs make? ft. Joe Hanson

    What sounds did dinosaurs make? ft. Joe Hanson

    264 views / 2 likes - added

    Despite what you’ve seen in the movies, dinosaurs probably didn’t roar. And they may have come in a rainbow of colors. Subscribe to Science Magic Show Hooray! https://bit.ly/2LLNAci Follow me to It's Okay To Be Smart! https://youtu.be/gQJHuG1Byj0 Fossil e

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  • 04:11 Why Twisted Light Holds the Key to Radically Faster Internet

    Why Twisted Light Holds the Key to Radically Faster Internet

    52 views / 0 likes - added

    With this new nanophotonic device, scientists might have just unlocked how to harness the data transfer potential of “twisted light”. How Ferroelectricity Could Change the Way We Store Data- https://youtu.be/IwT_ECJ1TEY Read More: Angular-momentum nanomet

  • 03:26 What Would a 24 Hour Flight Do To Your Body?

    What Would a 24 Hour Flight Do To Your Body?

    70 views / 0 likes - added

    This is a different kind of 24 hour challenge. Some people fly great distances to get to where they need to go, but what might you experience if you were in the air for a full 24 hours? Watch more: “Could You Survive A Plane Going Down?” ►►https://www.you

  • 01:13 These falling drops don’t splash—they spin

    These falling drops don’t splash—they spin

    54 views / 0 likes - added

    Unique surface makes water drops do the twist Read the story: https://www.sciencemag.org/news/2019/03/these-falling-drops-don-t-splash-they-spin Read the research: https://www.nature.com/articles/s41467-019-08919-2 About Science Snippets: These videos are

  • 05:01 Can a Virus Get a Virus?

    Can a Virus Get a Virus?

    47 views / 1 likes - added

    Can a virus get a virus? This video was sponsored by LastPass! Check out LastPass here: https://lastpass.onelink.me/HzaM/AprilLifeNoggin Subscribe: https://bit.ly/SubLifeNoggin | Get your exclusive Life Noggin merch: http://keeponthinking.co Follow Life N

  • 05:24 How Measles Vaccines Protect You From Other Diseases

    How Measles Vaccines Protect You From Other Diseases

    56 views / 0 likes - added

    Go to http://Brilliant.org/SciShow to try out Brilliants Daily Challenges. The first 200 subscribers get 20% off an annual Premium subscription. Since measles vaccines started making their rounds, child mortality has dropped by up to 90% percent in some c

  • 07:27 Don't Worry About That Asteroid That Might Hit This Year | SciShow News

    Don't Worry About That Asteroid That Might Hit This Year | SciShow News

    48 views / 0 likes - added

    Skillshare is offering SciShow viewers two months of unlimited access to Skillshare for free! Try it here: https://skl.sh/scishow-16That asteroid the headlines have been warning people about isn't likely to actually hit us, and scientists might have solve

  • 09:34 Five Cute Critters That Can Kill You

    Five Cute Critters That Can Kill You

    5 views / 0 likes - added

    To explore the music theory, production, history and culture behind our favorite songs and musical styles, check out Sound Field from PBS Digital Studios: http://youtube.com/soundfieldpbsDont let their cuteness fool you--these animals are not to be messed


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