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How Many Humans Have the Same Number of Body Hairs?

Do two people on the planet have the exact same number of body hairs? How about more than two? There’s a simple yet powerful mathematical principle that can help you find out the answer. Kelsey Houston-Edwards breaks down the Pigeonhole Principle and explains how it can be used to answer some pretty perplexing questions.
Season 1 Episode 3 Length 08:35 Premiere: 12/01/16

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Season 1 Episodes

The Honeycombs of 4-Dimensional Bees ft. Joe Hanson
S1 E32 Length 11:19 Premiere Date 08/03/17

Why Computers are Bad at Algebra
S1 E31 Length 14:24 Premiere Date 07/21/17

Making Probability Mathematical
S1 E30 Length 13:45 Premiere Date 07/13/17

Network Mathematics and Rival Factions | Infinite Series
S1 E29 Length 12:04 Premiere Date 06/29/17

Arrow's Impossibility Theorem
S1 E28 Length 14:31 Premiere Date 06/22/17

Voting Systems and the Condorcet Paradox
S1 E27 Length 10:54 Premiere Date 06/15/17

Dissecting Hypercubes with Pascal's Triangle
S1 E25 Length 14:17 Premiere Date 06/01/17

Topology Riddles | Infinite Series
S1 E23 Length 13:31 Premiere Date 05/11/17

Building an Infinite Bridge
S1 E22 Length 13:23 Premiere Date 05/04/17

Hacking at Quantum Speed with Shor's Algorithm
S1 E21 Length 16:35 Premiere Date 04/27/17

How to Break Cryptography
S1 E20 Length 15:37 Premiere Date 04/20/17

Can We Combine pi & e to Make a Rational Number?
S1 E19 Length 13:29 Premiere Date 04/13/17

Solving the Wolverine Problem with Graph Coloring
S1 E18 Length 13:10 Premiere Date 04/06/17

What is a Random Walk?
S1 E17 Length 12:35 Premiere Date 03/23/17

Proving Pick's Theorem
S1 E16 Length 11:17 Premiere Date 03/16/17

5 Unusual Proofs
S1 E15 Length 08:44 Premiere Date 03/09/17

Infinite Chess
S1 E14 Length 12:19 Premiere Date 03/02/17

Splitting Rent with Triangles
S1 E13 Length 16:21 Premiere Date 02/23/17

The Mathematics of Quantum Computers
S1 E12 Length 12:35 Premiere Date 02/16/17

How Infinity Explains the Finite
S1 E11 Length 11:46 Premiere Date 02/02/17

Kill the Mathematical Hydra
S1 E10 Length 13:29 Premiere Date 01/26/17

Singularities Explained
S1 E9 Length 10:22 Premiere Date 01/19/17

Can a Chess Piece Explain Markov Chains?
S1 E8 Length 13:20 Premiere Date 01/12/17

When Pi is Not 3.14
S1 E7 Length 11:31 Premiere Date 01/05/17

Can We Hear Shapes?
S1 E6 Length 10:35 Premiere Date 12/22/16

Can You Solve the Poison Wine Challenge?
S1 E5 Length 08:45 Premiere Date 12/15/16

A Hierarchy of Infinities
S1 E4 Length 08:04 Premiere Date 12/08/16

How Many Humans Have the Same Number of Body Hairs?
S1 E3 Length 08:35 Premiere Date 12/01/16

Are Prime Numbers Made Up?
S1 E2 Length 07:39 Premiere Date 11/24/16

A Breakthrough in Higher Dimensional Spheres
S1 E1 Length 07:51 Premiere Date 11/17/16

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