Lewis Carrolls Pillow Problem Numberphile

Featuring Alex Bellos. Check out Brilliant (get 20 off their premium service): (sponsor) More links stuff in full description below More videos with Alex Bellos: Alex s website: And his books on Amazon (including So You Think You ve Got Problems in which this puzzle features): and Monty Hall Problem: Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science. And support from Math For America NUMBERPHILE Website: Numberphile on Facebook: Numberphile tweets: Subsc