The Light Switch Problem Numberphile

Featuring Ben Sparks... See https://brilliant.org/

Featuring Professor Howard Masur from the University of Chicago. Filmed at the Mathematical Sciences Research Institute (MSRI) ...

Extended math version: http://youtu.be/ugbWqWCcxrg?t=2m32s A version for Dummies: https://youtu.be/7u6kFlWZOWg More ...

Featuring Matt Parker... Part 2 (solution) here: https://youtu.be/pasyRUj7UwM More links & stuff in full description below ...

Featuring Ben Sparks... Check out Brilliant (get 20% off their premium service): https://brilliant.org/

Fix

Watch the original

Another pass at the Monty Hall

Featuring Dr James Grime... See https://brilliant.org/

James Grime on the Hadwiger–Nelson

Featuring Tom Crawford and an Oxford Admissions Question... Check out Brilliant (get 20% off their premium service): ...

Featuring James Grime... Check out Jane Street's "Puzzle Page" for great brain teasers ...

Featuring Dan Romik from UC Davis. More footage from this interview soon on Numberphile2. Dan's comprehensive page on this ...

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My maths is not great but I got really fascinated watching the

Toilets at musical festivals are notorious - but how many should you check before committing!? EXTENDED MATH ENDING: ...