2015-05-23

[unlisted] 481K views, 17.5K likes, 95.0 dislikes audio only

3Blue1Brown

Updated version: /youtube/video/YtkIWDE36qU

An explanation of a neat circle puzzle involving combinatorics, graphs, Euler's characteristic formula and pascal's triangle.

Typo: At 7:30, the second term at the very bottom should have "k-1" instead of "k"

Music: Wyoming 307 by Time for Three