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  • 04:47 Puzzles: 5 "easy"... and one impossible!! (with answers)

    Puzzles: 5 "easy"... and one impossible!! (with answers)

    / 615 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)

    Most People Fail!! (IQ test with answers)

    / 665 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)

    95% Fail: 8 funny trick questions your friends will ALWAYS get wrong! (with answers)

    / 2,790 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

    Can you solve the rebel supplies riddle? - Alex Gendler

    / 972 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

  • 04:33 Fractals: The Geometry of Chaos - Christmas Lectures with Ian Stewart

    Fractals: The Geometry of Chaos - Christmas Lectures with Ian Stewart

    / 525 views

    Using a simple set of mathematical rules, a very intricate geometry can be created in the form of fractals. The Sierpinski triangle is a famous example. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rig

  • 07:45 The Monty Hall Problem - Christmas Lectures with Ian Stewart

    The Monty Hall Problem - Christmas Lectures with Ian Stewart

    / 501 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

  • 02:50 Urban planners aim to eliminate slums—with a mathematical approach

    Urban planners aim to eliminate slums—with a mathematical approach

    / 559 views

    Researchers are testing a tool based on a "topological view" of cities and slums to improve the design of growing urban areas Read the story: https://scim.ag/2Nv8Gw1 Read the paper (free): http://advances.sciencemag.org/content/4/8/eaar4644 CREDITS ------

  • 02:09 Popular What is a fractal? A lens to infinity

    What is a fractal? A lens to infinity

    / 1,228 views

    A fractal pattern is a kind of equation occurring all around us in nature. So what's a fractal and what does it have to do with nautiluses, romanesco broccoli, Star Trek II: The Wrath of Khan, peacocks, and predicting diseases? SUBSCRIBE! for more Popular

  • 01:34 Popular Matchstick Dog

    Matchstick Dog

    / 762 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

  • 01:30 Left-Facing Fish

    Left-Facing Fish

    / 652 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

  • 02:00 Maps, States & Borders

    Maps, States & Borders

    / 528 views

    Deane challenges Rob with a mathematical problem concerning maps, states and borders. SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow CONNECT WITH CURIOSITY Facebook ➤ http://www.facebook.com/CuriosityShow Twitter ➤ https:/

  • 02:36 Making Toast Fast

    Making Toast Fast

    / 469 views

    Deane presents a mathematical problem which starts with a broken toaster and ends with fast toast! SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow CONNECT WITH CURIOSITY Facebook ➤ http://www.facebook.com/CuriosityShow Twit

  • 04:39 The mysterious isochronous curve

    The mysterious isochronous curve

    / 637 views

    It's a big name, but the isochronous curve deserves it. Rob shows you how to draw one easily and then how to investigate its extraordinary properties.

  • 04:12 Popular Window Puzzles

    Window Puzzles

    / 704 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

  • 01:51 How to cut a pipe squarely

    How to cut a pipe squarely

    / 516 views

    Cutting a section of pipe or cylindrical rod is tricky - the cut goes sideways or doesn't meet itself, but Rob shows a simple way to cut a pipe squarely every time.

  • 01:41 Measuring Volume with a Ruler

    Measuring Volume with a Ruler

    / 675 views

    Deane demonstrates a method for measuring the volume of an irregular container. SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow CONNECT WITH CURIOSITY Facebook ➤ http://www.facebook.com/CuriosityShow Twitter ➤ https://twitt

  • 03:42 Magically-Linked Donuts

    Magically-Linked Donuts

    / 401 views

    Deane challenges viewers to find a way to cut a donut in halves, forming two linked circles. SUBSCRIBE NOW http://www.youtube.com/subscription_center?add_user=CuriosityShow CONNECT WITH CURIOSITY Facebook ➤ http://www.facebook.com/CuriosityShow Twitter ➤

  • 05:39 Popular Can You Solve A 5th Grade Problem From China? Find The Area Of ABCD

    Can You Solve A 5th Grade Problem From China? Find The Area Of ABCD

    / 774 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)

    The Viral Balloon Puzzle - The REAL Answer Explained (Using Ph.D. Level Math)

    / 749 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

  • 07:52 Popular What Does a 4D Ball Look Like in Real Life? Amazing Experiment Shows Spherical Version of Tesseract

    What Does a 4D Ball Look Like in Real Life? Amazing Experiment Shows Spherical Version of Tesseract

    / 771 views

    Follow me on: Get your subscription box here: https://www.theactionlab.com Twitter: https://twitter.com/theactionlabman Facebook: https://www.facebook.com/theactionlabrat In this video I show you what a movement through a fourth spatial dimension would lo

  • 05:08 Popular Can you solve the Leonardo da Vinci riddle? - Tanya Khovanova

    Can you solve the Leonardo da Vinci riddle? - Tanya Khovanova

    / 965 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

  • 16:55 Popular Calculating π by hand: the Chudnovsky algorithm

    Calculating π by hand: the Chudnovsky algorithm

    / 903 views

    For Pi Day 2018 I calculated π by hand using the Chudnovsky algorithm. https://en.wikipedia.org/wiki/Chudnovsky_algorithm k = 0 42698672/13591409 = 3.141592|751... k = 0 and k = 1 42698670.666333435968/13591408.9999997446 = 3.14159265358979|619... Watch m

  • 14:53 How thick is a three-sided coin?

    How thick is a three-sided coin?

    / 661 views

    Go check out the puzzles over on Brilliant! https://brilliant.org/standupmaths Use the URL above to help support this video and get 20% off the paid premium versions. Once you’ve done that: help us calculate the thickness of a three-sided coin! The bonus

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

    THE SCUTOID: did scientists discover a new shape?

    / 517 views

    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

  • 12:17 Popular How to detect bank fraud with maths

    How to detect bank fraud with maths

    / 766 views

    I chat to Daniel from the financial crime and security team at Monzo to talk about how they used maths to detect a data breach at Ticketmaster which exposed people to bank fraud. Here is their post about what happened: https://monzo.com/blog/2018/06/28/ti

  • 02:23 Popular Tricks to Learn When Multiplying and Dividing Fractions With Mixed Numbers

    Tricks to Learn When Multiplying and Dividing Fractions With Mixed Numbers

    / 1,670 views

    Tricks to Learn When Multiplying and Dividing Fractions With Mixed Numbers. Part of the series: Math Help With Multiplying. When it comes to learning multiplying and dividing, a few tricks can make things easier. Learn about tricks to getting the hang of

  • 01:48 Popular How to Multiply Negative Mixed Numerals

    How to Multiply Negative Mixed Numerals

    / 1,285 views

    How to Multiply Negative Mixed Numerals. Part of the series: Math Help With Multiplying. Multiplying negative mixed numerals quires you to keep a few very important things in mind. Find out how to multiply negative mixed numerals with help from a mathemat

  • 01:43 How to Multiply With Parentheses

    How to Multiply With Parentheses

    / 410 views

    How to Multiply With Parentheses. Part of the series: Math Help With Multiplying. Multiplying with parenthesis requires you to do things in a very specific order. Find out about multiplying with parenthesis with help from a mathematics educator in this fr

  • 02:08 Popular Tutorial for Adding & Subtracting Fractions

    Tutorial for Adding & Subtracting Fractions

    / 1,931 views

    Tutorial for Adding & Subtracting Fractions. Part of the series: Adding and Subtracting Fractions. Adding and subtracting fractions is a lot like riding a bike - once you know how, you never forget. Get a tutorial for adding and subtracting fractions with

  • 04:22 Popular How to Determine the Area of a Triangle Based on Coordinates of Its Vertices & Determinants

    How to Determine the Area of a Triangle Based on Coordinates of Its Vertices & Determinants

    / 1,681 views

    How to Determine the Area of a Triangle Based on Coordinates of Its Vertices & Determinants. Part of the series: Finding and Using the Area of a Triangle. You can use the coordinates of a triangle's vertices and determines, along with a very specific rule

  • 01:32 Popular How to Solve for the Height of Cylinders

    How to Solve for the Height of Cylinders

    / 764 views

    How to Solve for the Height of Cylinders. Part of the series: Algebra Tips. Solving for the height of cylinders can be accomplished in just a few moments with the right equation. Learn how to solve for the height of cylinders with help from an experienced

  • 02:41 Popular How to Substitute Known or Given Values for the Variables in an Algebraic Expression

    How to Substitute Known or Given Values for the Variables in an Algebraic Expression

    / 1,014 views

    Substituting known or given values for a variable is required to complete some types of operations. Learn how to substitute known or given values for a variable with help from a mathematics tutor and educator in this free video clip.

  • 01:59 Popular Graphing Inequalities on a Number Line

    Graphing Inequalities on a Number Line

    / 1,019 views

    When graphing inequalities on a number line, the number line should have 0 in the center and negative numbers on the left side, with positive numbers on the right. Graph inequalities, such as X is greater than 2, with tips from a math teacher in this free

  • 01:42 Popular How To Use Rounding in Math Problems

    How To Use Rounding in Math Problems

    / 1,355 views

    How To Use Rounding in Math Problems. Part of the series: Math Problems. In certain math problems rounding may actually make finding a solution easier and more clear. Use rounding in math problems with help from a mathematics educator in this free video c

  • 03:04 Popular Steps to Solve Quadradic Equations

    Steps to Solve Quadradic Equations

    / 881 views

    Steps to Solve Quadradic Equations. Part of the series: Equations. Quadtratic equations can be easily solved by following a straightforward, step-by-step process. Learn the steps to solve quadratic equations with help from a mathematics tutor and educator

  • 02:20 Popular How to Solve Sine & Cosine Equations

    How to Solve Sine & Cosine Equations

    / 1,678 views

    How to Solve Sine & Cosine Equations. Part of the series: Equations. Sine and cosine equations need to be solved in a very specific way. Learn how to solve sine and cosine equations with help from an experienced math tutor in this free video clip. Read mo

  • 03:05 Popular Four Steps to Solve a Absolute Value Equation

    Four Steps to Solve a Absolute Value Equation

    / 1,035 views

    Four Steps to Solve a Absolute Value Equation. Part of the series: Help With Equations. Solving a absolute value equation requires you to complete four distinct steps. Learn the four steps to solve an absolute value equation with help from an experienced

  • 01:46 Popular Easy Way of Learning to Subtract Fractions With Whole Numbers

    Easy Way of Learning to Subtract Fractions With Whole Numbers

    / 1,373 views

    Easy Way of Learning to Subtract Fractions With Whole Numbers. Part of the series: Simple Math. When it comes to subtracting with fractions, you're going to want to keep a few very important things in mind. Find out an easy way of learning subtracting wit

  • 01:41 Popular How to Add and Subtract Mixed Numbers and Show the Work

    How to Add and Subtract Mixed Numbers and Show the Work

    / 2,047 views

    How to Add and Subtract Mixed Numbers and Show the Work. Part of the series: Adding and Subtracting Fractions. When adding and subtracting mixed numbers it is always important to remember to show your work. Add and subtract mixed numbers and show the work

  • 01:56 Popular How to Do Fractional Coefficients

    How to Do Fractional Coefficients

    / 1,300 views

    How to Do Fractional Coefficients. Part of the series: Math Problems. Fractional coefficients need to be completed in a very specific way. Learn how to do fractional coefficients in math problems with help from a mathematics educator in this free video cl

  • 01:34 Popular What Happens When a Fraction Is Multiplied by Its Reciprocal?

    What Happens When a Fraction Is Multiplied by Its Reciprocal?

    / 845 views

    What Happens When a Fraction Is Multiplied by Its Reciprocal?. Part of the series: Math Help With Multiplying. When a fraction is multiplied by its reciprocal a very specific thing occurs. Learn what happens when a fraction is multiplied by its reciprocal

  • 00:57 Popular How Do You Multiply Numbers in Brackets?

    How Do You Multiply Numbers in Brackets?

    / 1,246 views

    How Do You Multiply Numbers in Brackets?. Part of the series: Math Help With Multiplying. Multiplying numbers in brackets requires a very specific procedure. Multiply numbers in brackets with help from a mathematics educator in this free video clip. Read

  • 02:53 Popular Slope Equation for Intersecting Lines

    Slope Equation for Intersecting Lines

    / 707 views

    Slope Equation for Intersecting Lines. Part of the series: Equations. Intersecting lines can be properly expressed using the correct slope equation. Find out about the slope equation for intersecting lines with help from a mathematics tutor and educator i

  • 02:15 Popular How to Add Square Roots to Numerator Fractions

    How to Add Square Roots to Numerator Fractions

    / 983 views

    How to Add Square Roots to Numerator Fractions. Part of the series: Math Problems. Adding square root numerator fractions requires you to keep the terms in the problem separate. Add square root numerator fractions with help from a mathematics educator in

  • 01:14 Popular How to Multiply to Get the Area of a Parallelogram

    How to Multiply to Get the Area of a Parallelogram

    / 1,511 views

    How to Multiply to Get the Area of a Parallelogram. Part of the series: Perimeter, Area and Decimals. Multiplication is one way you can find the area of a parallelogram pretty easily. Multiply to get the area of a parallelogram with help from a longtime m

  • 02:06 Popular Types of Angles, Figures & Shapes

    Types of Angles, Figures & Shapes

    / 1,488 views

    Types of Angles, Figures & Shapes. Part of the series: Geometry Tips. many different types of angles, figures and shapes make up math in general as well as geometry. Learn about the types of angles, figures and shapes in geometry with help from a longtime

  • 02:17 Popular The Advantages of Using the Least Common Denominator When Adding & Subtracting Denominators

    The Advantages of Using the Least Common Denominator When Adding & Subtracting Denominators

    / 739 views

    The Advantages of Using the Least Common Denominator When Adding & Subtracting Denominators. Part of the series: Adding and Subtracting Fractions. Using the least common denominator when adding and subtracting fractions certainly has its fair share of adv

  • 11:13 Last Cards Match - Numberphile

    Last Cards Match - Numberphile

    / 543 views

    Numberphile Playing Cards: http://bit.ly/NumberphileCards More card videos: http://bit.ly/Cards_Shuffling More links & stuff in full description below ↓↓↓ Featuring Tadashi Tokieda, a professor of mathematics at Stanford University. More Tadashi Videos: h

  • 05:35 Balls and Cones - Numberphile

    Balls and Cones - Numberphile

    / 580 views

    This is a (stand-alone) continuation of the previous video at: https://youtu.be/2vnqSwWAn34 Featuring Tadashi Tokieda. More links & stuff in full description below ↓↓↓ More Tadashi: http://bit.ly/tadashi_vids Playing cards latest: http://www.bradyharanblo

  • 16:26 Earthquakes, Circles and Spheres - Numberphile

    Earthquakes, Circles and Spheres - Numberphile

    / 515 views

    Tadashi is back with a discussion of how we know where earthquakes occur. A second video is at: https://youtu.be/lubGnk0UZt0 More links & stuff in full description below ↓↓↓ More Tadashi Tokieda at: http://bit.ly/tadashi_vids Podcasts HELLO INTERNET http:

  • 16:19 The Cross Ratio - Numberphile

    The Cross Ratio - Numberphile

    / 553 views

    One of the most famous free kicks ever taken - but how far from the goal was Brazil's Roberto Carlos? More links & stuff in full description below ↓↓↓ Discussed by Federico Ardila from San Francisco State University. More Federico videos: http://bit.ly/Fe

  • 04:36 How to make a Klein Bottle from an old pair of jeans - Numberphile

    How to make a Klein Bottle from an old pair of jeans - Numberphile

    / 652 views

    More Klein bottle videos: http://bit.ly/KleinBottles More links & stuff in full description below ↓↓↓ Visit Cliff Stoll's online store: http://www.kleinbottle.com/ More Cliff videos: http://bit.ly/Cliff_Videos Numberphile is supported by the Mathematical

  • 11:37 Popular Floating Balls and Lift - Numberphile

    Floating Balls and Lift - Numberphile

    / 852 views

    Tadashi discusses pressure and lift... with a toy of course! More links & stuff in full description below ↓↓↓ Lift and wings on Sixty Symbols: https://youtu.be/PF22LM8AbII Tadashi Playlist: http://bit.ly/tadashi_vids You can buy version of this toy on Ama

  • 10:51 Popular Math Antics - Intro to the Metric System

    Math Antics - Intro to the Metric System

    / 1,604 views

    Learn More at mathantics.com Visit http://www.mathantics.com for more Free math videos and additional subscription based content!

  • 03:21 Can You Solve A Puzzle That Fooled Richard Feynman?

    Can You Solve A Puzzle That Fooled Richard Feynman?

    / 691 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

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

    What Is The Area? "You Should Be Able To Solve This"

    / 486 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

  • 05:52 Can You Solve The "MEANEST" SAT Test Question Ever?

    Can You Solve The "MEANEST" SAT Test Question Ever?

    / 675 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

  • 09:15 5-Sided Square - Numberphile

    5-Sided Square - Numberphile

    / 611 views

    Check our sponsor The Great Courses Plus (free trial): http://ow.ly/j5cB30hIvm2 This video features Cliff Stoll. More links & stuff in full description below ↓↓↓ More Cliff Stoll videos: http://bit.ly/Cliff_Videos Buy a Klein Bottle fro

  • 08:15 Popular The Mathematics of Locomotion - Christmas Lectures with Ian Stewart

    The Mathematics of Locomotion - Christmas Lectures with Ian Stewart

    / 1,131 views

    The scof all living things is governed by nerve impulses that follow a pattern of travelling waves. This is true for the trot of a horse, the tripod gait of an ant, the undulating movement of the millipede and even the slither of a snake. Subscribe for re

  • 05:13 Popular Can you solve the rogue AI riddle? - Dan Finkel

    Can you solve the rogue AI riddle? - Dan Finkel

    / 943 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

  • 11:50 Popular The Golden Angle - Christmas Lectures with Ian Stewart

    The Golden Angle - Christmas Lectures with Ian Stewart

    / 970 views

    Thr golden angle is a mathematical concept, closely related to the golden ratio and Fibonacci numbers. Where can you find it and how is it formed? Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the full lecture: http://www.rigb.org/

  • 05:51 The Mathematics of Walking and Gait - Christmas Lectures with Philip Morrison

    The Mathematics of Walking and Gait - Christmas Lectures with Philip Morrison

    / 472 views

    Just like the extent of the swing of a pendulum is proportional to the length of the pendulum, the pace of an animal walking is proportional to the length of the leg of the animal. Subscribe for regular science videos: http://bit.ly/RiSubscRibe Watch the

  • 10:12 Popular 21-card trick - Numberphile

    21-card trick - Numberphile

    / 966 views

    A simple trick with some neat math behind it. More on Numberphile cards at: http://www.bradyharanblog.com/numberphile-playing-cards More links & stuff in full description below ↓↓↓ More cards video: http://bit.ly/Cards_Shuffling This vi

  • 04:40 Popular How exactly does binary code work? - José Américo N L F de Freitas

    How exactly does binary code work? - José Américo N L F de Freitas

    / 736 views

    Check out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/how-exactly-does-binary-code-work-jose-americo-n-l-f-freitas Imagine trying to use words to describe every scene in a film, every note in a song, or eve

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  • 05:53 Popular Are We Breathing Caesar's Last Breath

    Are We Breathing Caesar's Last Breath

    / 828 views

    Submit your vote for America’s favorite novel! https://to.pbs.org/2Jes2X5 Are you breathing air molecules that were once exhaled by Caesar, Joan of Arc, or Madame Curie? And why did Albert Einstein try to break into the refrigerator business? We talked to

  • 06:59 Can animals predict the future? Meet Barry the Psychic Labrador!

    Can animals predict the future? Meet Barry the Psychic Labrador!

    / 481 views

    Barry the Psychic Labrador has predicted an England win: https://psychic-pets.com/pets/232 Lilo the Psychic Basset Hound has predicted a Sweden win: https://psychic-pets.com/pets/1246 This video was uploaded before the World Cup quarter-final: England vs

  • 10:22 Popular Why do whole oranges float, but peeled oranges sink?

    Why do whole oranges float, but peeled oranges sink?

    / 961 views

    Go check out the courses on Brilliant! https://brilliant.org/standupmaths Be one of the first n people (for n = 200) to sign-up for a free Brilliant account and get 20% off if you upgrade to paid membership. Here is the original QI tweet: "A whole orange

  • 06:01 How many different World Cup results can a team have?

    How many different World Cup results can a team have?

    / 543 views

    Register your pet at Psychic Pets and start predicting the World Cup games! http://psychic-pets.com/ You can also donate money to help keep the Psychic Pet servers running! Via PayPal: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=M

  • 03:22 The Rug Puzzle: how many triangles?

    The Rug Puzzle: how many triangles?

    / 509 views

    This video sponsored by ME. I mean: MATHS GEAR. Buy my book. https://mathsgear.co.uk/collections/books/products/signed-paperback-things-to-make-and-do-in-the-fourth-dimension My original tweet that started the puzzle! https://twitter.com/standupmaths/stat

  • 04:46 Popular Can you solve the Mondrian squares riddle? - Gordon Hamilton

    Can you solve the Mondrian squares riddle? - Gordon Hamilton

    / 739 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

  • 09:09 The Illumination Problem - Numberphile

    The Illumination Problem - Numberphile

    / 539 views

    Featuring Professor Howard Masur from the University of Chicago. Filmed at the Mathematical Sciences Research Institute (MSRI). Part 2 of this interview: https://youtu.be/AGX0cLbHaog Patreon: http://www.patreon.com/numberphile Numberphile is supported by

  • 08:39 Frog Jumping - Numberphile

    Frog Jumping - Numberphile

    / 622 views

    Featuring Gordon Hamilton from Math Pickle. More links below. Numberphile T-Shirts: https://teespring.com/stores/numberphile Gordon and the Mondrian Art Problem: https://youtu.be/49KvZrioFB0 Math Pickle (Gordon's website): http://mathpickle.com Numberphil

  • 08:45 The Legend of Question Six - Numberphile

    The Legend of Question Six - Numberphile

    / 375 views

    Free trial at Great Courses Plus: http://ow.ly/7Hh2302dIFt More links & stuff in full description below ↓↓↓ Simon Pampena discusses the famous Question 6 from the 1988 International Mathematical Olympiad. More links below... Second part of this video: htt

  • 04:19 Lace Knot Trick - Numberphile

    Lace Knot Trick - Numberphile

    / 414 views

    Playlist of Tadashi Tokieda videos: http://bit.ly/tadashi_vids More links & stuff in full description below ↓↓↓ More knot videos: http://bit.ly/Knot-a-Phile Fast shoelaces: https://youtu.be/XPIgR89jv3Q What is a knot?: https://youtu.be/aqyyhhnGraw Support

  • 11:13 Coffee Cup Vibrations - Numberphile

    Coffee Cup Vibrations - Numberphile

    / 577 views

    Tadashi explores coffee and tea cups to new depths... More links & stuff in full description below ↓↓↓ Playlist of Tadashi Tokieda videos: http://bit.ly/tadashi_vids Support us on Patreon: http://www.patreon.com/numberphile NUMBERPHILE Website: http://www

  • 07:04 The Secret of Floppy Paper - Numberphile

    The Secret of Floppy Paper - Numberphile

    / 402 views

    Tadashi is back, this time looking at drooping paper (and toilet paper). More links & stuff in full description below ↓↓↓ Subscribe to Numberphile and never miss a floppy paper video: http://bit.ly/Numberphile_Sub Playlist of Tadashi Tokieda videos: http:

  • 06:34 The Most Powerful Dice - Numberphile

    The Most Powerful Dice - Numberphile

    / 503 views

    Tadashi explores a special set of dice... And has a powerful lesson. More links & stuff in full description below ↓↓↓ Subscribe to Numberphile: http://bit.ly/Numberphile_Sub More dice videos: http://bit.ly/Dice_Videos Playlist of Tadashi Tokieda videos: h

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    g-conjecture - Numberphile

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    Conway Checkers - Numberphile

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    The Silver Ratio - Numberphile

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    Combinatorics and Higher Dimensions - Numberphile

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    The Trinity Hall Prime - Numberphile

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    How Pi was nearly changed to 3.2 - Numberphile

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    How to order 43 Chicken McNuggets - Numberphile

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    The Law All Languages Obey

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    What is a P-Value and Why Does it Matter?

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    What is Zeno's Dichotomy Paradox? - Colm Kelleher

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    18 MATH RIDDLES THAT EVEN YOUR MATH TEACHER WILL FAIL

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  • 03:23 Popular Galton Board

    Galton Board

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  • 15:13 The Golden Ratio (why it is so irrational) - Numberphile

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    BEST Guess Who Strategy- 96% WIN record using MATH

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    Can you solve the false positive riddle? - Alex Gendler

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    The Coin Hexagon - Numberphile

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    The Math (and money) of Soccer Stickers - Numberphile

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    3D objects create impossible scenes

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    Impossible Objects 10 "Topology-Disturbing Objects" by Kokichi Sugihara 2016

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    Why can't you divide by zero? - TED-Ed

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  • 02:59 Proof that 1 = 2.

    Proof that 1 = 2.

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  • 05:40 How to find a square root

    How to find a square root

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    16 Math Riddles And Logic Puzzles That Will Crack Your Mind Wide Open

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    Can you solve the buried treasure riddle? - Daniel Griller

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    Number Sticks - Numberphile

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    Round Peg in a Square Hole - Numberphile

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    Catalan's Conjecture - Numberphile

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  • 09:06 Superpermutations - Numberphile

    Superpermutations - Numberphile

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    Cannons and Sparrows - Numberphile

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    Calculating a Car Crash - Numberphile

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  • 09:07 The Square-Sum Problem - Numberphile

    The Square-Sum Problem - Numberphile

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  • 16:12 River Crossings (and Alcuin Numbers) - Numberphile

    River Crossings (and Alcuin Numbers) - Numberphile

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  • 05:54 Ham Sandwich Problem - Numberphile

    Ham Sandwich Problem - Numberphile

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    Don Bradman's Duck - Numberphile

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    Probability that at least 2 people in a room of 30 share the same birthday | Probability and Statist

    / 943 views

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    OK Go Sandbox - One Moment of Math

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  • 08:00 Popular 15 BRILLIANT MATH TRICKS THEY DON'T TEACH YOU AT SCHOOL

    15 BRILLIANT MATH TRICKS THEY DON'T TEACH YOU AT SCHOOL

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  • 02:29 Popular Division with Zero - Maths Tricks #4

    Division with Zero - Maths Tricks #4

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    Can you solve the seven planets riddle? - Edwin F. Meyer

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  • 05:02 How To Make a Hexaflexagon: The Definitive Guide

    How To Make a Hexaflexagon: The Definitive Guide

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    Estimating p value from simulation

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    Example estimating a p-value based on a simulation to approximate the sample distribution of the sample proportions (assuming the null hypothesis is true).

  • 07:58 p values and significance tests

    p values and significance tests

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    p values, significance levels, null hypotheses, alternative hypotheses, and significance tests

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    Examples of null and alternative hypotheses

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    Examples of null and alternative hypotheses

  • 10:15 17 FAST MATHS TRICKS YOU MUST KNOW

    17 FAST MATHS TRICKS YOU MUST KNOW

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  • 09:13 Popular Math Antics - Subtracting Mixed Numbers

    Math Antics - Subtracting Mixed Numbers

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    Learn More at mathantics.com Visit http://www.mathantics.com for Free math videos and additional subscription based content!

  • 15:14 Mo Gawdat of Google X: The Secret to Happiness May Lie in a Mathematical Equation

    Mo Gawdat of Google X: The Secret to Happiness May Lie in a Mathematical Equation

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    The coin flip conundrum - Po-Shen Loh

    / 720 views

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    Science Artist Uses Math to Make Sculptures

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    John Muntean has been creating magic angle sculptures since 1986. At first, the sculpture just looks like an abstract piece. When rotated at the magic angle and lit from above, a three-part masterpiece emerges. See more from John Muntean: https://www.jvmu

  • 06:25 Popular The magic of Fibonacci numbers | Arthur Benjamin

    The magic of Fibonacci numbers | Arthur Benjamin

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  • 07:13 How big is infinity? - Dennis Wildfogel

    How big is infinity? - Dennis Wildfogel

    / 466 views

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  • 01:20 Proof Without Words: The Circle

    Proof Without Words: The Circle

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  • 01:56 How to Count Infinity

    How to Count Infinity

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  • 04:11 The Order of Operations is Wrong

    The Order of Operations is Wrong

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    Foiled Proof

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  • 13:00 What Is Statistics: Crash Course Statistics #1

    What Is Statistics: Crash Course Statistics #1

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    Can you solve the dark coin riddle? - Lisa Winer

    / 1,244 views

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  • 02:13 Popular Crazy Math Trick: I will guess Your Age! (OLD 2016 version)

    Crazy Math Trick: I will guess Your Age! (OLD 2016 version)

    / 1,030 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

  • 07:53 How to Figure Out the Day of the Week For Any Date Ever

    How to Figure Out the Day of the Week For Any Date Ever

    / 397 views

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  • 47:36 Completing the square - Live algebra lesson

    Completing the square - Live algebra lesson

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    Product rule - Logarithm derivatives example

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    Product rule - Calculus derivatives tutorial

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  • 11:09 Popular 15 GENIUS MATH TRICKS THAT ARE ACTUALLY EASY

    15 GENIUS MATH TRICKS THAT ARE ACTUALLY EASY

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    How to embarrass your teacher. Smart and simple backs to school math hacks and tricks. Learn how to multiply fast in your head. Subscribe to 5-Minute Crafts KIDS: https://goo.gl/PEuLVt ----------------------------------------------------------------------

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    Riddles: 5 "easy"... & one IMPOSSIBLE! (with answers)

    / 930 views

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  • 10:07 Popular New IQ Test! (with answers)

    New IQ Test! (with answers)

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  • 02:13 Popular Crazy Math Trick: I will guess Your Age! (2017 with answers)

    Crazy Math Trick: I will guess Your Age! (2017 with answers)

    / 943 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)

    97% Fail... Test your EYES! (incl. secret message)

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    ★★ 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)

    Three Solutions! Can You Find Them? (math trick with answers)

    / 1,164 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)

    You will NOT know all of these sounds, I am SURE!! (with answers)

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    Math Antics - Adding Mixed Numbers

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  • 19:41 The Actual Mathematics of Popping Champagne Corks

    The Actual Mathematics of Popping Champagne Corks

    / 532 views

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    The Mathematics of Error Correction - with Marcus du Sautoy

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  • 06:30 When To Try New Things (According to Math)

    When To Try New Things (According to Math)

    / 518 views

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  • 04:17 Popular How Encryption Keys Work - with Chris Bishop

    How Encryption Keys Work - with Chris Bishop

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  • 09:20 An astonishing old calculator - Numberphile

    An astonishing old calculator - Numberphile

    / 484 views

    Cliff explains his passion for two Friden EC-132s. Extra discussion and explanation at: LINK More links & stuff in full description below ↓↓↓ More Cliff videos: http://bit.ly/Cliff_Videos Calculator Unboxings: http://bit.ly/CalcUnbox Millionaire Machine:

  • 08:40 78557 and Proth Primes - Numberphile

    78557 and Proth Primes - Numberphile

    / 445 views

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  • 09:00 The Enormous TREE(3) - Numberphile

    The Enormous TREE(3) - Numberphile

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  • 10:33 Strange Spheres in Higher Dimensions - Numberphile

    Strange Spheres in Higher Dimensions - Numberphile

    / 411 views

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  • 08:04 Casting Out Nines - Numberphile

    Casting Out Nines - Numberphile

    / 425 views

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  • 09:08 Aaron Numbers - Numberphile

    Aaron Numbers - Numberphile

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  • 06:29 When To Quit (According to Math)

    When To Quit (According to Math)

    / 367 views

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  • 03:00 Multiply Numbers By Drawing Lines

    Multiply Numbers By Drawing Lines

    / 607 views

    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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  • 05:21 Will We All Be Overweight By 2048?

    Will We All Be Overweight By 2048?

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  • 04:58 Popular What is the tragedy of the commons? - Nicholas Amendolare

    What is the tragedy of the commons? - Nicholas Amendolare

    / 703 views

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    Math Antics - Mixed Numbers

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  • 03:37 Are University Admissions Biased? | Simpson's Paradox Part 2

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  • 06:02 Popular Math, When Are You Going To Use It?

    Math, When Are You Going To Use It?

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    If you're in or went to high school, you're familiar with the phrase "When am I ever going to use this?" when talking about pretty much anything you learn in math class. This is the answer to that question. The real answer, not something like "one day a s

  • 05:58 Popular Can You Crack This Four Card Code?

    Can You Crack This Four Card Code?

    / 765 views

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  • 05:01 The Physics of SANTA

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  • 05:27 An unexpected way to inflate a balloon - Numberphile

    An unexpected way to inflate a balloon - Numberphile

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  • 13:59 MENACE: the pile of matchboxes which can learn

    MENACE: the pile of matchboxes which can learn

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  • 02:14 Visualizing the 600-Cell

    Visualizing the 600-Cell

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  • 05:27 Popular 9 Tricky Puzzles That Will Totally Blow Your Brain

    9 Tricky Puzzles That Will Totally Blow Your Brain

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  • 04:47 Popular Can you solve the egg drop riddle? - Yossi Elran

    Can you solve the egg drop riddle? - Yossi Elran

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  • 14:18 The Ideal Auction - Numberphile

    The Ideal Auction - Numberphile

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  • 08:55 Pancake Numbers - Numberphile

    Pancake Numbers - Numberphile

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    Matt & Hugh: the mystery of two balls in a can

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  • 04:30 Popular Where do math symbols come from? - John David Walters

    Where do math symbols come from? - John David Walters

    / 862 views

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  • 04:51 Ratios for recipes

    Ratios for recipes

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  • 04:47 The Case for Hovercars

    The Case for Hovercars

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  • 03:54 Popular THESE POPULAR RIDDLES WILL BLOW YOUR MIND - Decipher Riddles & Brain Teasers

    THESE POPULAR RIDDLES WILL BLOW YOUR MIND - Decipher Riddles & Brain Teasers

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  • 11:37 Popular CARNIVAL SCIENCE- How to Win!

    CARNIVAL SCIENCE- How to Win!

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  • 04:40 Simpson's Paradox

    Simpson's Paradox

    / 560 views

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  • 05:29 Creating The Never-Ending Bloom

    Creating The Never-Ending Bloom

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  • 05:32 Popular How did Polynesian wayfinders navigate the Pacific Ocean? - Alan Tamayose and Shantell De Silva

    How did Polynesian wayfinders navigate the Pacific Ocean? - Alan Tamayose and Shantell De Silva

    / 763 views

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  • 05:35 Secrets to measuring a piece of paper - Numberphile

    Secrets to measuring a piece of paper - Numberphile

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