The logic puzzles quant firms ask that Google banned
8 min read How the classic brainteasers from Jane Street, SIG, and Optiver actually work, and the handful of patterns that sit behind all of them. Read article
Interview Prep
Quant Finance
The probability brainteasers trading desks still ask
6 min read The reroll game, HH versus HT waiting times, the coupon collector, Bayes, and making a market, with the reasoning trading firms actually grade. Read article
Quant Finance
A quant probability cheat sheet that holds up live
6 min read The probability facts and reasoning patterns that come up most in trading interviews, and the setups that trip people up. Read article
