Closer Look at the Birthday Paradox - Numberphile

Featuring Tom Crawford (happy birthday!) - More links & stuff in full description below ↓↓↓ Extra footage from this video and interview - https://youtu.be/4rdLQso6_8U See our original video from 2012 - https://www.youtube.com/watch?v=a2ey9a70yY0 Tom Crawford playlist on Numberphile - https://www.youtube.com/playlist?list=PLt5AfwLFPxWJ2TNTA79reKQ6S88kTvDR- Tom Crawford website - https://tomrocksmaths.com/ Tom's YouTube channel - https://www.youtube.com/tomrocksmaths Patreon: http://www.patreon.com/numberphile Numberphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: https://bit.ly/numberphile-janestreet We are also grateful for support from the Ben Delo Foundation - https://delo.org/ NUMBERPHILE Website: http://www.numberphile.com/ Videos by Brady Haran Animation by Pete McPartlan Numberphile T-Shirts and Merch: https://teespring.com/stores/numberphile Brady's videos subreddit: http://www.reddit.com/r/BradyHaran/ Brady's latest videos across all channels: http://www.bradyharanblog.com/ Sign up for (occasional) emails: http://eepurl.com/YdjL9