The canonical list
The Quant 75
The 75 questions worth doing before anything else — the quant-interview answer to Blind 75. Hand-picked across probability, brain teasers, stochastic calculus, options, statistics and coding, ordered so each topic ramps from warm-up to hard. Every problem has a full worked solution and goes into spaced-repetition review once you solve it.
01Probability
The backbone of every quant interview — conditional probability, Bayes, expected value and the classic puzzles.
02Brain Teasers
Structured thinking under pressure — invariants, clever counting and the canonical logic puzzles desks reuse.
03Stochastic Processes
Random walks, Brownian motion, gambler’s ruin and Itô — the machinery behind pricing and research interviews.
04Calculus & Linear Algebra
Integration tricks, limits, Taylor series, eigenvalues and the Gaussian integral that recur across research interviews.
05Statistics
The CLT, estimators, regression and covariance — the foundation of quant research and data-heavy roles.
06Finance & Pricing
Put-call parity, no-arbitrage, risk-neutral valuation, forwards and the binomial model — the core pricing ideas.
07Options & Greeks
Delta, gamma, theta and vega — the intuition options market makers and traders are screened for.
08Portfolio & Risk
Sharpe, VaR, the Kelly criterion and minimum-variance weights — the toolkit of risk and portfolio interviews.
09Coding & Algorithms
LeetCode-style coding plus the numerical methods — Monte Carlo, Newton’s method, streaming medians — quant desks rely on.
Want a role-specific path instead? Try a track or a timed study plan, or browse all problems.