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# Search Results: "fractal geometry"

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• 05:41

### Scientists Trapped Electrons In a Quantum Fractal (And It's Wild!)

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Fractals aren’t just crazy cool mathematically infinite shapes. They might just have the capacity to revolutionize modern electronics as we know it. Thumbnail image courtesy of Sander Kempkes. There’s a Subterranean Biosphere Hiding in the Earth’s Crust a

• 02:09

### What is a fractal? A lens to infinity

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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

• 08:45

### Fractals: How to Decode the Geometry of Chaos І The Great Courses

279 views / 0 likes - added

Try a free month trial of The Great Courses Plus here: https://www.thegreatcoursesplus.com/special-offer?utm_source=US_OnlineVideo&utm_medium=SocialMediaEditorialYouTube&utm_campaign=136270 Let's begin by clarifying what's distinctive about fractals by co

• 01:37

### Translation Example | Transformations | Geometry | Khan Academy

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• 08:13

### Points After Rotation | Transformations | Geometry | Khan Academy

440 views / 1 likes - added

Points after rotation Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-rotations/e/rotations-1?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson: https://w

• 02:46

### Defining Rotation Example | Transformations | Geometry | Khan Academy

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Defining rotation example Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-rotations/e/defining-rotations?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson

• 01:55

### Drawing Image Of Translation | Transformations | Geometry | Khan Academy

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• 01:25

### Using Rotation Widget | Transformations | Geometry | Khan Academy

434 views / 0 likes - added

Using rotation widget Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/rigid-transformations-intro/e/performing-rotations-on-the-coordinate-plane?utm_source=YT&utm_medium=Desc&utm_campai

• 01:48

### Using Reflection Tool | Transformations | Geometry | Khan Academy

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Using reflection tool Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/rigid-transformations-intro/e/performing-reflections-on-the-coordinate-plane?utm_source=YT&utm_medium=Desc&utm_camp

• 10:32

### Rotating About Arbitrary Point | Transformations | Geometry | Khan Academy

463 views / 0 likes - added

Rotating about arbitrary point Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-rotations/e/rotations-2?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson:

• 07:19

### Reflecting Segments Over Line | Transformations | Geometry | Khan Academy

433 views / 0 likes - added

Reflecting segments over line Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-reflections/e/reflections-1?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesso

• 05:41

### Points On Line Of Reflection | Transformations | Geometry | Khan Academy

440 views / 0 likes - added

Points on line of reflection Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-reflections/e/defining-reflections?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next

• 01:32

### Formal Translation Tool Example | Transformations | Geometry | Khan Academy

480 views / 0 likes - added

Formal translation tool example Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/hs-geo-translations/e/defining-translations?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the

• 02:28

### Drawing Line Of Reflection | Transformations | Geometry | Khan Academy

486 views / 0 likes - added

Drawing line of reflection Watch the next lesson: https://www.khanacademy.org/math/geometry/transformations/hs-geo-reflections/v/determining-the-line-of-reflection?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Missed the previous lesson? https://www

• 31:51

### Geometry: An Interactive Journey to Mastery | The Great Courses

418 views / 0 likes - added

https://www.thegreatcoursesplus.com/geometry-an-interactive-journey-to-mastery?utm_source=US_SocialMedia&utm_medium=SocialMediaEditorialYoutube&utm_campaign=138569 Like other math fields, geometry teaches us how to think. It leads students to uncover new

• 12:51 Popular

### I HATE GOING UPSIDE DOWN!!! (Geometry Dash #3)

895 views / 9 likes - added

I HATE GOING UPSIDE DOWN!!! (Geometry Dash #3) ► Subscribe and join TeamTDM! :: http://bit.ly/TxtGm8 ► BUY MY NEW BOOK HERE :: http://smarturl.it/DanTDM ► Follow Me on Twitter :: http://www.twitter.com/dantdm ► Previous Video :: https://youtu.be/xRfBMq14Y

• 10:01 Popular

### CUSTOM GEOMETRY DASH LEVELS?!?

788 views / 6 likes - added

► Subscribe and join TeamTDM! :: http://bit.ly/TxtGm8 ► Follow Me on Twitter :: http://www.twitter.com/dantdm ► Previous Video :: https://youtu.be/ap-7XaMMtH4 i never knew you could get custom geometry dash levels.. ► DanTDM MERCH :: http://www.dantdmshop

• 09:12

### Koch Snowflake Fractal

440 views / 0 likes - added

A shape that has an infinite perimeter but finite area More free lessons at: http://www.khanacademy.org/video?v=azBNsPa1WC4

• 07:23

### Introduction To Transformations | Transformations | Geometry | Khan Academy

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Introduction to transformations Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/transformations/rigid-transformations-intro/e/performing-translations-on-the-coordinate-plane?utm_source=YT&utm_medium=De

• 02:04

### Non-Euclidean Geometry of a Sphere - Christmas Lectures with Philip Morrison

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According to Euclidean geometry the angles of a triangle add up to 180 degrees. Philip Morrison shows an example of where this isn't true, and non-Euclidean geometry applies. Watch the full lecture: http://www.rigb.org/christmas-lectures/watch/1968/gulliv

• 57:34

### Topology, Geometry And Life In Three Dimensions

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If you imagine a three dimensional maze from which there is no escape, how can you map it? Is there a way to describe what all possible mazes look like, and how do mathematicians set about investigating them? Subscribe for regular science videos: http://b

• 08:05

### Can You Solve The Hardest Easy Geometry Problem?

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In the figure, what is the value of angle x? This problem is known as Langley's Adventitious Angles. It is also known as the hardest easy geometry problem because it can be solved by elementary methods but it is notoriously difficult to work out. Can you

• 02:04

### Compose Shapes | Geometry | Early Math | Khan Academy

446 views / 0 likes - added

Learn how to combine shapes to make other shapes. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-composing-shapes/e/compose-shapes?utm_source=YT&utm_medium

• 02:25

### Halves And Fourths | Geometry | Early Math | Khan Academy

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Learn how to divide shapes into two or four equal sections. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-fractions-of-shapes/e/halves-and-fourths?utm_sou

• 06:09

### Recognizing Shapes | Geometry | Early Math | Khan Academy

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Learn how to identify circles, triangles, squares, rectangles, rhombuses, and trapezoids. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-shapes/e/naming-sh

• 01:31

### Filling Rectangles With Squares | Geometry | Early Math | Khan Academy

453 views / 0 likes - added

Learn how to fill rectangles with squares. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-fractions-of-shapes/e/filling-rectangles-with-same-sized-squares?

• 03:51

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

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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

• 04:19

### Cousin Fal's Shape Collection | Geometry | Early Math | Khan Academy

397 views / 0 likes - added

Learn how to classify shapes based on their number of sides, number of corners, and side-lengths. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-geometry-topic/cc-early-math-shapes/e/n

• 02:52

### Bauhaus Ballet: A Dance of Geometry

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The Bauhaus Movement produced more than just minimalist buildings and furniture; it also gave way to a dance of geometry. In his 1922 “Triadic Ballet,” prodigious artist Oskar Schlemmer stripped away the genre’s archetypally fluid movements and fabrics, p

• 03:05

### Equal Parts Of Circles And Rectangles | Geometry | Early Math | Khan Academy

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• 04:33

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

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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

• 03:43

### Right Triangle Geometry — Harder Example | Math | New SAT | Khan Academy

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Watch Sal work through a harder Right triangle geometry problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s4-easier?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed

• 08:17

### Right Triangle Geometry — Basic Example | Math | New SAT | Khan Academy

433 views / 0 likes - added

Watch Sal work through a basic Right triangle geometry problem. Watch the next lesson: https://www.khanacademy.org/test-prep/new-sat/new-sat-math/new-sat-additional-topics-math/v/sat-math-s7-harder?utm_source=YT&utm_medium=Desc&utm_campaign=NewSAT Missed

• 09:50 Popular

### Can You Solve This 6th Grade Geometry Problem From China?

841 views / 1 likes - added

What is the total area of the red spots? The diagram involves a rectangle with dimensions of 10 and 20. Inside the rectangle one of its diagonals is connected. There are two circles of equal size that are tangent to each other and the rectangle. The video

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• 03:16

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

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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.

• 04:13

### Adults Stumped By Geometry Problems For 10 Year Olds. Can You Solve Them?

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These homework problems were given to 10 year old children (Year 5) in England (Glossop, Derbyshire) and they were posted to Facebook when some adults found them to be difficult. One person claimed the problems were impossible to solve. Can you figure the

• 05:57

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

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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

• 04:13

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

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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

• 03:59

### Movie Geometry - Shaping the Way You Think

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Shapes have meaning. That may sound crazy, but hear me out. Let's explore how cinematographers and directors create shapes inside the frame to add visual storytelling to their films. Twitter: http://bit.ly/1QvLI0H Patreon: http://bit.ly/1UaO9MU Music: htt

• 04:35

### Jupiter Joe - The Subway Astronomer

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Most of us spend most of the time looking down at our phones. But Jupiter Joe wants to change that - in NYC, he’s drawing people’s eyes to the sky. And right from the convenience of the subway. ✦ Follow Joe: •Facebook: http://bit.ly/2xZ7k

• 04:02

### What Does a Pianist See? | Eye Tracking - Episode 1

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Using eye tracking glasses, we answer the question of what a pianist sees while playing. OUR PARTNERS: •Tobii Pro: http://www.tobiipro.com/ •Steinway and Sons: https://www.steinway.com/ Filmed at Steinway Hall in NYC. PIANISTS: •Expert - Da

• 02:06

### Types of Angles, Figures & Shapes

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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

• 08:50

### Visual Pythagorean Theorem Proof

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Visual Pythagorean Theorem Proof - some basic geometry required

• 08:18

### Musical fractals

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Be sure to check out my video on HARMONIC POLYRHYTHMS to better understand why this crazy illusion works! https://www.youtube.com/watch?v=_gCJHNBEdoc SUPPORT ME ON PATREON: http://www.patreon.com/adamneely Follow me on the interwebs: http://www.facebook.c

• 18:18

### 2003 AIME II Problem 14

386 views / 0 likes - added

Trigonometry and geometry to find the area of an equilateral (but not regular) hexagon More free lessons at: http://www.khanacademy.org/video?v=Ec-BKdC8vOo

• 03:34

### How Sound Works (In Rooms)

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Acoustic Geometry shows how sound works in rooms using Nerf Disc guns, 1130 feet of fluorescent green string, and Moiré patterns, and a before-and-after example.

• 02:43

### The Man Teaching Math Lessons in the Sky

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Winfred Randolph Lowe, aka, “Randy the Kite Man,” is a retired math teacher taking geometry to new heights. For the past 20 years, Winfred has spent his free time flying kites. Now he’s combining his two favorite pastimes to teach the fundamentals of geom

• 03:10

### How fractals can help you understand the universe | BBC Ideas

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What is a fractal, and how can fractals help us understand the universe? Classic examples of fractals in nature are broccoli and snowflakes. They can offer a fascinating explanation for how the world works!Written by Brandon Pestano, animated by Christoph

• 07:46

### Let's Talk About Sets - Numberphile

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Dr Bobby Wilson talks about sets... Sum-free sets, fractal sets... All sorts of sets. NUMBERPHILE Website: http://www.numberphile.com/ Numberphile on Facebook: http://www.facebook.com/numberphile Numberphile tweets: https://twitter.com/numberphile Extra b

• 09:19

### How This Guy Makes Amazing Sand Art | Obsessed | WIRED

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Artist Andres Amador takes "playing with sand" to a whole new level. His free-flowing and fractal-inspired works of art exist for only a short amount of time, eventually getting swallowed up by the ocean's tides. But, in that timeframe, Andres is able to

• 24:10

### Sandpiles - Numberphile

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Luis David Garcia-Puente discusses sandpiles, and how they produce amazing "fractal zeroes". Dr Garcia-Puente is an associate professor at Sam Houston State University and was interviewed while attending an MSRI-UP summer program. We'd also like to thank

• 07:34

### Pixar: The Math Behind The Movies - Tony DeRose

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View full lesson: http://ed.ted.com/lessons/pixar-the-math-behind-the-movies-tony-derose The folks at Pixar are widely known as some of the world's best storytellers and animators. They are perhaps less recognized as some of the most innovative math whizz

• 03:22

### ballet rotoscope

438 views / 0 likes - added

This work is an experimental video created from a research about "Rotoscope" and “Computer Geometry”. Rotoscope is known as an traditional technique for creating animation invented in 1905 by Max Fleischer in which animators traced the actors

• 04:53

### We Taught an AI To Synthesize Materials | Two Minute Papers #251

309 views / 0 likes - added

The paper "Gaussian Material Synthesis" and its source code is available here: https://users.cg.tuwien.ac.at/zsolnai/gfx/gaussian-material-synthesis/ Our Patreon page: https://www.patreon.com/TwoMinutePapers We would like to thank our generous Patreon sup

• 26:31

### How Much of the Earth Can You See at Once?

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My shirt is from this quarters CURIOSITY BOX: http://www.curiositybox.com/MY TWITTER: http://www.twitter.com/tweetsauceMY INSTAGRAM: http://www.instagram.com/electricpantsThanks to Mitchell for the jack-in-the-box! http://brainvenomstudio.com/3Blue1Brown:

• 03:46

### Five things you didn't know about the Moon

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First photos of the Moon... EVER. Lunar volcanoes! (Yes, the Moon used to have active volcanoes.) The wheels NASA built for the first moon rover. Oh, did you know the Moon is moving away from us? And the Moon has over 400,000 pounds of Earth stuff on it (

• 13:13

### 1, 2, 3, 4 Stories About Math

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From geometry to personal finance, there is one common denominator that links the stories in this reelthey are all about math.SUBSCRIBE: https://goo.gl/vR6AcbThis story is a part of our Human Condition series. Come along and let us connect you to some of

• 03:59

### Why Do Honeybees Love Hexagons? - Zack Patterson And Andy Peterson

443 views / 1 likes - added

View full lesson: http://ed.ted.com/lessons/why-do-honeybees-love-hexagons-zack-patterson-and-andy-peterson Honeybees are some of nature's finest mathematicians. Not only can they calculate angles and comprehend the roundness of the earth, these smart ins

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• 09:04

### What's inside Samsung Galaxy S8?

238 views / 1 likes - added

Does the new battery catch on fire? This is the first look into the soon to be released phone. Thanks to Techrax for the phone, check out his channel here: https://www.youtube.com/user/TechRax Subscribe and watch JerryRigEverything here: https://youtu.be/

• 06:00

326 views / 0 likes - added

The first 755 people to sign up for Brilliant will get 20% off their premium subscription: https://brilliant.org/RealLifeLore/ Get the RealLifeLore book here: http://amzn.to/2ieJLyN Please Subscribe: http://bit.ly/2dB7VTO Music is by Brandon Maahs. Check

• 10:03

### Four has Four Letters

269 views / 0 likes - added

Four is the only number in the English language which as as many letters as its value. Leave your findings below and please do comment (constructively!) on the findings of others. Here is the python code I used to track which binary sequences ended in 13

• 03:39

### What Is The Shape of Space?

247 views / 0 likes - added

A collaboration with Jorge Cham and Daniel Whiteson, check out "We Have No Idea" at http://www.wehavenoidea.com Jorge's PhDComics: http://www.phdcomics.com Numberphile video about sports in hyperbolic space: https://www.youtube.com/watch?v=u6Got0X41pY Sup

• 09:50

### A Hole in a Hole in a Hole - Numberphile

320 views / 0 likes - added

Audible: http://www.audible.com/numberphile Cliff's glassware: http://bit.ly/ACME_Klein Extras for this video: https://youtu.be/6Qpfv5y-7WU More Cliff: http://bit.ly/Cliff_Videos Cliff references A Comprehensive Introduction to Differential Geometry by Mi

• 21:12

### The Infinite Pattern That Never Repeats

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Simples rules of geometry meant that 5-fold symmetry was impossible as were crystals without a periodic structure. This turns out to be wrong. Thanks to LastPass for sponsoring a portion of this video. Click here to start using LastPass: https://ve42.co/L

• 11:23

### Dark Energy, Cosmology Part 2: Crash Course Astronomy #43

344 views / 0 likes - added

The majority of the universe is made up of a currently mysterious entity that pervades space: dark energy. We don’t know exactly what it is, but we do know that dark energy accelerates the expansion of space. We think this means the Universe will expand f

• 02:09

### Here’s What It Would Take for Helicopters to Be as Big as Planes

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Since the invention of flight, planes seem to have only gotten bigger. But what about helicopters? Why are they still so small? How Do Helicopters Fly Without Wings? - https://youtu.be/pVMT4hqFzQg For more epic stories of innovation that shaped our future

• 09:02

### How To Think About Imaginary Numbers

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• 10:44

### The Napkin Ring Problem

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• 07:43

### How To Trisect An Angle With Origami - Numberphile

456 views / 0 likes - added

Zsuzsanna Dancso trisects an angle using origami - follows on from this video about Euclidean geometry: http://youtu.be/6Lm9EHhbJAY Special thanks to the Patreon supporters listed below: Herschal Sanders (from Susan) Lê OK Merli Alex Bozzi Thomas J

• 12:41

### Why The Universe Needs Dark Energy | Space Time | PBS Digital Studios

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Check out our sister channel Crash Course Physics to learn more about the basic foudations of Physics: https://www.youtube.com/watch?v=ZM8ECpBuQYE&list=PL8dPuuaLjXtN0ge7yDk_UA0ldZJdhwkoV Get your own Space Time t-shirt at http://bit.ly/1QlzoBi Tweet at us

• 32:44 Popular

### The Power of Mathematical Visualization | The Great Courses

716 views / 0 likes - added

https://www.thegreatcoursesplus.com/show/the_power_of_mathematical_visualization?utm_source=US_SocialMedia&utm_medium=SocialMediaEditorialYoutube&utm_campaign=138569 The Power of Mathematical Visualization teaches you these vital problem-solving skills in

• 07:06

### This Is A Human Woman -- BiDiPi #49

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• 05:17

### How many ways are there to prove the Pythagorean theorem? - Betty Fei

379 views / 0 likes - added

Check out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/how-many-ways-are-there-to-prove-the-pythagorean-theorem-betty-fei What do Euclid, 12-year-old Einstein, and American President James Garfield have in c

• 05:48

### How Does a Real-Life Escherian Staircase Work?

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In this video I show you a 3d printed infinite staircase also called an Escherian staircase after M.C Escher. I talk about how this staircase can actually be possible in Nil space using non-euclidean geometry. Ascending in Nil Video: https://www.youtube.c

• 04:50

### Why is Relativity Hard? | Special Relativity Chapter 1

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Thanks to http://www.brilliant.org/minutephysics for supporting this video! Thanks to my friend Mark Rober (https://www.youtube.com/channel/UCY1kMZp36IQSyNx_9h4mpCg) for making the spacetime globe, and to Grant Sanderson (https://www.youtube.com/3blue1bro

• 08:29

### Why Don’t We Have a Photo of a Black Hole Yet?

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Wondering where the Event Horizon Telescope is at with the world's first photo of a black hole? So are we. We headed back to MIT Haystack Observatory to find out. Read More: Event Horizon Telescope https://eventhorizontelescope.org/ MIT Haystack Observato

• 05:06

### How Do Maglev Trains Work? - Christmas Lectures with Leonard Maunder

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Maglev stands for magnetic levitation which is how these trains hover and are pushed along the tracks. Subscribe for regular science videos: http://bit.ly/RiSubscRibe While only three countries currently have operational maglev trains, China, Japan and So

• 16:40

### My robotic basketball hoop won't let you miss

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I wasn't totally satisfied with my previous basketball hoop so I made another try at the problem. This time with robots and computer vision! My old solid state hoop is old news. Long live our robot overlords. I wonder what V3 will look like... The basketb

• 21:07

90 views / 0 likes - added

I've wondered if it is possible to make a basketball hoop where the ball always goes in. Imagine throwing a ball and if it hits the backboard it somehow gets directed into the hoop. Thanks to physics it isn't quite possible to make ALL possible shots go i

• 59:52

### The Extraordinary Theorems of John Nash - with Cédric Villani

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Fields medal winner Cédric Villani takes us through the very special world of mathematical creation of John Nash, who founded several new chapters of game theory and geometric analysis in just a few revolutionary contributions that seemed to come from now

• 04:31

### Counting American Coins | Measurement And Data | Early Math | Khan Academy

454 views / 0 likes - added

Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/early-math/cc-early-math-measure-data-topic/cc-early-math-money/v/counting-dollars?utm_source=YT&utm_medium=Desc&utm_campaign=EarlyMath Watch the next lesson: htt

• 04:01

### Comparing Values With Calculator | Numbers And Operations | 8th Grade | Khan Academy

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Learn how to compare 22.9% to √0.45 using a calculator. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-approximating-irrational-numbers/e/approximating-irr

• 15:18

### Automatic golf club replaces a bag of clubs and improves your game

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I wanted to see if I could make myself a better golfer by combining robotic engineering and golf. The result is a robotic club that senses your swing and corrects your shot for distance. It should be possible to correct for slice and hook with some hardwa

• 02:41

### Multiplying Multiples Of Powers Of 10 | Numbers And Operations | 8th Grade | Khan Academy

455 views / 0 likes - added

Learn how to multiply (9 * 10^9) (-2 * 10^-3). Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-orders-of-magnitude/e/orders-of-magnitude?utm_source=YT&utm_m

• 01:44

### Interpreting Two-way Tables | Data And Modeling | 8th Grade | Khan Academy

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• 04:10

### Approximating With Powers Of 10 | Numbers And Operations | 8th Grade | Khan Academy

430 views / 0 likes - added

Learn how to approximate how much larger the world population was than the US population in 2014. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-eighth-grade-math/cc-8th-numbers-operations/cc-8th-orders-of-

• 03:47

### What Is the Shape of the Universe?

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Unlike the Earth, the universe might actually be flat! But how do scientists know that, if we can’t observe it? Get 20% off http://www.domain.com domain names and web hosting when you use coupon code SEEKER at checkout! Read More: What is the Shape of the

• 03:25 Popular

### Can You Solve This? AA + BB + CC = ABC

1,158 views / 0 likes - added

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

• 09:19

### Can You Trust Your Eyes In Spacetime? | Space Time | PBS Digital Studios

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What can you trust in Spacetime? Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Last time we talked about what curvature means, looked at g

• 01:18

### Can You Make 4 Triangles From 6 Matches?

600 views / 0 likes - added

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

• 04:42

### How Warren Buffett Tried To Trick Bill Gates In A Dice Game

352 views / 0 likes - added

Warren Buffett once challenged Bill Gates to a dice game similar to this one. How would you play the game? Blog post (text explanation) http://wp.me/p6aMk-4ro Source The dice numbers and the story are described at Microsoft Research's website for non-tran

• 04:22 Popular

### Impossible Algebra Problem

791 views / 0 likes - added

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

• 05:57

### How To Split A Cake Fairly Using Math

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How can 2 people split up a cake, knowing that each person wants to get a larger piece than the other? What about 3 people, or even N people? This is an example of a fair division problem from game theory. There are many cake-cutting algorithms to produce

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• 02:50

### Why Some Molecules Have Evil Twins

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A tiny change in a molecule’s geometry completely changes its effects on the human body. How We Made This Video (Ever & David Talk About Drugs): https://youtu.be/tefxgYP0BVM Thanks also to our supporters on https://www.patreon.com/MinuteEarth ____________

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• 06:24 Popular

### The Seemingly Impossible Escape Logic Puzzle

780 views / 0 likes - added

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

• 14:13

### Making an iPad case for blind to "see" with touch

121 views / 0 likes - added

Thanks SimpliSafe for sponsoring this video. SimpliSafe is award-winning home security that keeps your home safe around the clock. It's really reliable, easy to use, and there are no contracts. Check out SimpliSafe here: https://Simplisafe.com/StuffMadeHe

• 03:00

### Multiply Numbers By Drawing Lines

391 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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• 01:57 Popular

709 views / 1 likes - added

Pick a 2 digit number. Got it? Now and add up the digits. Subtract that from your original number. Look up the resulting number in the table. Can I figure out the symbol you are looking at? This video predicts your symbol and explains why this math trick

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• 07:52

### Find The 10 Digit Number Classic Puzzle And Solution

440 views / 0 likes - added

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

• 07:10

### TOUGH Interview Question - Ways To Give 11 Coins To 3 People

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How many ways can you divide 11 coins to 3 people? How many ways are there if each person has to get at least 1 coin? This puzzle is an example of a technical interview question. The video demonstrates the solution, which indicates the number of non-negat

• 06:24

### Can You Solve The Chameleon Riddle?

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A museum has 13 blue, 15 red, and 17 green chameleons. Whenever two chameleons of different colors meet, they both change into the color of the other chameleon (if blue and red met, for example, they would both turn green). As the chameleons mingle, is it

• 04:52

### Can You Solve The Two Rope Puzzle?

402 views / 0 likes - added

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

• 10:20

### SURPRISING Coin Flipping Probability - Flips To HH Versus HT

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What is the expected number of coin flips until you get two heads in a row (HH)? What is the expected number of coin flips until you get a heads followed by a tails (HT)? The video presents the solution and an intuitive explanation for this probability ri

• 02:45

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

391 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

• 02:57

645 views / 1 likes - added

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

• 03:29

### Comparing Decimals Example 1 | Decimals | 4th Grade | Khan Academy

420 views / 1 likes - added

Learn how to compare decimals with tenths and hundredths. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-compare-decimals/e/comparing_decimals_1?utm_source=YT&utm_me

• 05:38

### Decimals As Words | Decimals | 4th Grade | Khan Academy

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• 06:57

### When Is Christmas? Mentally Convert Date To Day Of The Week

305 views / 0 likes - added

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

• 02:23

### This SAT Math Question Has A Mistake

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This question appeared on the October 1980 SAT exam. Like all questions, it was supposed to have exactly one correct answer. However the test-makers made a mistake. Can you figure out what they did wrong? Blog post (text explanation): http://wp.me/p6aMk-4

• 03:31

### How Logical Are You? The Irrationality Illusion Tricks Most

568 views / 0 likes - added

This video relates a cognitive bias ("irrational" decision) to an optical illusion (picture at 1:45). For more, check out my new book, "The Irrationality Illusion: How to Make Smart Decisions And Overcome Bias" http://amzn.to/1o3FaAg Blog post (text and i

• 08:27

### Can You Solve The 3 Cards Riddle?

392 views / 0 likes - added

There are 3 cards in this problem. One card is blue on both sides, another is red on both sides, and the last is red on one side and blue on the other. The cards are put in a bag and I pick one at random. Without looking at the colors on the card, I place

• 02:55

### Comparing Fractions On A Number Line | Fractions | 4th Grade | Khan Academy

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• 07:49

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

602 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

• 02:32

### Comparing Fractions Visually With Pies | Fractions | 4th Grade | Khan Academy

420 views / 0 likes - added

• 03:40

457 views / 0 likes - added

Learn how to compare decimals using grid diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-compare-decimals-visually/e/comparing-decimals-visually?utm_source=

• 03:33

### Can You Solve This Intelligence Test? Viral Facebook Puzzle

413 views / 0 likes - added

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

• 06:55

### Place Value For Decimals Greater Than One (examples) | 4th Grade | Khan Academy

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Understand decimal numbers that are greater than 1. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimals-greater-than-one/e/decimals-greater-than-one-intuition?ut

• 04:08

### Plotting Decimal Numbers On A Number Line (examples) | Khan Academy

381 views / 0 likes - added

Learn how to find decimals with hundredths on a number line. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimals-number-line/e/decimals_on_the_number_line_2?utm_

• 03:06

### Decimal Intuition With Grids (examples) | Decimals | 4th Grade | Khan Academy

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• 04:37

418 views / 0 likes - added

Understand the connection between decimals and fractions using a grid diagram. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-decimal-fractions/e/fraction-decimal-in

• 05:09

### Can You Solve The Snake Eyes Probability Riddle?

470 views / 0 likes - added

You close your eyes and roll a pair of dice. The casino dealer announces that at least one of the rolls is showing a 1.What is the probability that both dice are showing a 1? Watch the video for the solution. (Snake eyes is a term for rolling a pair of 1s

• 05:55

### "Impossible" Logic Puzzle - How Many Liars Are At The Party?

439 views / 0 likes - added

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

• 07:40

### Comparing Numbers Represented In Different Ways | 4th Grade | Khan Academy

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Examples of Khan Academy practice problems where you compare decimals, fractions, and number diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-decimals/cc-4th-compare-decimal

• 05:39

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

481 views / 0 likes - added

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

• 02:35

### Comparing Fractions Visually With A Bar | Fractions | 4th Grade | Khan Academy

444 views / 0 likes - added

Learn how to compare fractions with unlike denominators by drawing bars Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-comparing-fractions-visually/e/visually

• 06:06

### Equivalent Fractions And Different Wholes | Fractions | 4th Grade | Khan Academy

473 views / 0 likes - added

Learn how two fractions are equivalent only if they refer to the same whole. For example, 1/2 of a small circle is not the same as 1/2 of a big circle. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-

• 06:01 Popular

### Can You Solve The Viral 1 + 4 = 5 Puzzle? The Correct Answer Explained

4,528 views / 0 likes - added

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

• 15:15

### Moving Faster Than The Speed Of Light? Special Relativity Velocity Addition Formula

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If train A is moving towards train B, and each train moves at 75% the speed of light (relative to the ground), will an observer on train A think that train B is moving at 150% the speed of light? But nothing moves faster than the speed of light, so what i

• 04:11

### Decomposing Hundredths Into Tenths And Hundredths | 4th Grade | Khan Academy

446 views / 0 likes - added

Learn how to decompose a fraction into tenths and hundredths. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-fractions-unlike-denom/e/decompose-fractions-with

• 01:47

### Decompose Hundredths On Number Line | Fractions | 4th Grade | Khan Academy

692 views / 0 likes - added

Learn how to decompose a fraction with hundredths on a number line. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-fractions-unlike-denom/e/decompose-fraction

• 04:53

### Can You Solve The Friendship Riddle?

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In a group of 6 people, you might find that some people are friends on Facebook, or you might find out that no one is friends on Facebook. Show that there is always a group of 3 people in which either: (a) all 3 people are mutual friends or (b) the 3 peop

• 03:21

### Can You Solve A Puzzle That Fooled Richard Feynman?

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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

• 13:40

### BEST Way To Play Memory (Card Game) - WIN Using Math

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The card game of memory (aka concentration) is a children's game to test visual recall. Strategically you can figure out the best move by doing probability calculations. This video explains the best possible way to play the game mathematically. You can le

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• 04:20

### Visually Converting From Tenths To Hundredths | 4th Grade | Khan Academy

432 views / 0 likes - added

Learn how to convert fractions from tenths to hundredths using grid diagrams. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/cc-fourth-grade-math/cc-4th-fractions-topic/cc-4th-fractions-unlike-denom/e/equivale

• 03:17

### Can YOU Solve It? This Question Stumped 75% Of PhD Economists

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Introductory economics courses cover the concept of an opportunity cost. Can you figure out the opportunity cost for the problem in the video? This video presents a question that surprisingly more than 75% of PhD economists did not answer correctly. Paper

• 09:11

### Can You Solve The Rectangle Ratio Puzzle? The Surprising Answer

493 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

• 03:28

### Flower Math Problem - Adults Stumped By Question For Kids In China

596 views / 2 likes - added

This problem is said to come from a test given to a Chinese kindergarten class (5 year olds). It was posted online and caused a lot of debate as adults were stumped about the correct answer, some saying it is impossible. Can you figure it out? This video

• 05:48

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

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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

• 03:48

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

496 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

• 07:25

### Can You Solve The Race To December 31 Riddle?

410 views / 0 likes - added

Here's a fun game you can play with another person. The game starts on January 1. Each of two players takes turns calling out another date. The new date has to be a later date in the year with either the same month OR the same day (from January 1, a playe

• 01:49

### This Matchstick Puzzle Is

422 views / 1 likes - added

This classic matchstick/toothpick puzzle is making the rounds because it is supposedly "extremely hard" for adults. Can you make 3 squares by moving 3 matchsticks? You cannot break any of the sticks, the resulting squares must be of equal size, and each t

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• 13:17

### I made a robot to cut my hair with scissors

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My hair is getting too long so I decided to build a robot to cut it for me. To support future projects like this check out my patreon: http://patreon.com/stuffmadehereIf you like this project you'll probably like my iPad case that lets you see blindfolded

• 02:51 Popular

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

847 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:

• 06:24

### Can You Solve The Missing Sock Puzzle?

319 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

• 05:13

### Real Star Trek Like Transporter. Why This 3D Light Printer Is A HUGE Game Changer

168 views / 0 likes - added

Computed Axial Lithography is the first printer of it's kind. It can shape objects, all-at-once, using specialized synthetic resin and rays of light. We Can Now 3D Print in Suspended Gravity (And It’s Mesmerizing!) - https://youtu.be/FgCedvTbKso Read More

• 05:26

### Can You Solve The Red Ball Lottery Puzzle?

358 views / 0 likes - added

(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

• 11:27 Popular

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

980 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

• 05:33

### What is 6÷2(1+2) = ? The Correct Answer Explained

585 views / 0 likes - added

What is 6÷2(1+2) = ? This problem went viral and generated millions of comments on Facebook, Twitter, YouTube and social media sites. I explain how to get the correct answer by using the modern interpretation of the order of operations. I also explain how

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• 02:37

### Adults Stumped By Maths Questions For 15 Year Olds. Can You Solve Them?

437 views / 0 likes - added

How hard are math tests? A survey asked 2,000 UK adults to answer sample GCSE test questions intended for 15 year old students. On average, the survey questions were missed by about 40% of adults. Can you solve them? The video presents 2 questions that ma

• 03:09

### Can You Solve The Marriage Logic Problem? 80% Fail

375 views / 0 likes - added

Surveys have found 80 percent get this logic problem wrong. Alice is looking at Bob, and Bob is looking at Charlie. Alice is married; Charlie is not. Is a married person looking at an unmarried person? Answer choices are A) Yes, B) No, and C) Cannot be de

• 07:40

### Can You Solve The 21 Flags Game From Survivor?

423 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

• 08:19

### Can You Solve The Spies Sharing Secrets Puzzle?

343 views / 0 likes - added

After a successful mission, each of N spies obtains a unique secret. By protocol, the spies share secrets by a series of phone calls between 2 spies at a time. During a call, a spy can share all the secrets the knows, including secrets learned from previo

• 03:54

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

411 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

• 08:51

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

390 views / 0 likes - added

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

• 02:06 Popular

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

1,025 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

• 05:52

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

377 views / 0 likes - added

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

• 07:21

### Can You Solve The Magical Pond Puzzle?

418 views / 1 likes - added

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

• 02:57

### Can You Solve This Crazy Equation? Ramanujan's Radical Brain Teaser

428 views / 0 likes - added

In 1911, Srinivasa Ramanujan posed this problem involving an infinite nested radical (a never-ending expression that has square roots inside of square roots). Can you figure out how to simplify the equation? The video presents an intuitive solution. Techn

• 06:18

### Can You Solve The Diluted Wine Puzzle?

372 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

• 04:30

462 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

• 11:57

### The Wallis Formula For π

309 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

• 07:39

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

477 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

• 07:47

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

484 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

• 05:00

### How ESAs Dark Energy Telescope Will Map the Dark Universe

132 views / 0 likes - added

ESA is building its first space telescope to investigate how dark energy and dark matter control our universe. Subscribe to Seeker! http://bit.ly/subscribeseeker Watch more Countdown to Launch: http://bit.ly/CTLplaylist Thumbnail Credit: Thales Alenia Spa

• 05:27

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

591 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

• 02:57

### Why Do Rivers Curve?

432 views / 1 likes - added

We're now on Patreon! Please support us at: http://www.patreon.com/minuteearth Can you find an oxbow lake in GoogleEarth? Share your findings (pictures or coordinates) on Twitter, Facebook and other social media using the hashtag #oxbowlake And subscribe!

• 26:11

### Which Way Is Down?

78 views / 0 likes - added