The Phone Number puzzle

Part of a monthly series of puzzles: https://momath.org/mindbenders/

The last IMO problem AI could not solve

A beautiful puzzle that eluded AI, and the intuition it requires. Check out our virtual career fair: https://3b1b.co/talent See new videos early: https://3b1b.co/support An equally valuable form of su

Reinventing Entropy | Compression is Intelligence Part 1

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Tie random ends: How many loops?

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The subset sum puzzle

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How (and why) to take a logarithm of an image

Escher's Print Gallery, and the tour of complex analysis it invites. Explore our virtual career fair: https://3b1b.co/talent Join channel supporters to see videos early: https://3b1b.co/support An equ