There Are Magic Hexagons of Every Order
What is so special about the number 19?
gukov.dev
Software egineering and math.
Latest posts
Steve Ballmer was wrong
A few days ago John Graham-Cumming posted about “Steve Ballmer’s incorrect binary search interview question” which drew a lot of attention on Hacker News. The Ballmer’s favorite brain teaser goes like this:
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Hey there. I can help you prepare for a technical interview - for free!
Jane Street puzzle: Circle Time!
Every month Jane Street, a quantitative trading firm, posts a math puzzle on their website. How cool is that?