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Dear Dirichlet, Issue 19
Game shows, flight and social media bots are among the problems solved in this issue's Dear Dirichlet agony aunt column
I’m counting on it
Joe Celko looks at four different abacuses used throughout history
Do the shuffle: finding π in your playlists
Henry Jaspars really likes Nick and Norah’s infinite playlist.
Oπnions: Should I share my code?
Scroggs debates whether sharing truly is caringDear Dirichlet, Issue 10
Letter writing, hospital visits, and getting the family active are among the topics of discussion in this issue's Dear Dirichlet advice column
What should you get a mathematician for Christmas?
Behind today's door... The Chalkdust guide to Christmas presents