Brainteasers & Logic
Probability puzzles, expected value problems, and logical deduction — the format used in trading firm and prop desk screens.
9 questions · L1–L2 · first 3 free, rest Premium
01L1Two Dice — Conditional ProbabilityJunior Quant→02L1Bertrand's Box ParadoxJunior Quant→03L1Consecutive HeadsJunior Quant→04L1Kelly CriterionJunior QuantPremium05L2Ants on a RodSenior QuantPremium06L2St. Petersburg ParadoxSenior QuantPremium07L2Gambler's RuinSenior QuantPremium08L2Poisson Process MLESenior QuantPremium09L2Median-Bid AuctionSenior QuantPremium