The Problems with Secret Santa - Numberphile

22 Nov 2016 11:00 2,046
491,028
14,320 258

Dr Hannah Fry discusses Secret Santa, anonymity and derangements. And a better way to do it.
More Hannah on Numberphile: http://bit.ly/hannah_vids
Hannah's co-written Xmas book: http://amzn.to/2g8mIn6
Hannah's love/math book: http://bit.ly/frylovebook
Numberphile poster: https://store.dftba.com/products/numberphile-poster
Graham's Number T-Shirt: https://store.dftba.com/collections/numberphile/products/grahams-number-shirt
Other Numberphile T-Shirts: https://teespring.com/stores/numberphile

Hannah on Objectivity: https://youtu.be/ayzKlPIcRKU

NUMBERPHILE
Website: http://www.numberphile.com/
Numberphile on Facebook: http://www.facebook.com/numberphile
Numberphile tweets: https://twitter.com/numberphile
Subscribe: http://bit.ly/Numberphile_Sub

Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile

Videos by Brady Haran
Artwork and animation in this video by Pete McPartlan

Support us on Patreon: http://www.patreon.com/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

Related of "The Problems with Secret Santa - Numberphile" Videos