Probability for
Quant Interviews

About the Course

Quant probability interviews test whether you can decompose unfamiliar puzzles into tractable sub-problems under time pressure. This course gives you a repeatable playbook: identify the problem type, choose the right tool (conditioning, recursion, generating functions), and verify your answer with sanity checks.

Start with The Playbook — a structured framework for quant probability interviews, common traps to avoid, and techniques for reasoning through problems you have never seen before. Then build your toolkit with 8 concept lessons covering Bayes' theorem, expected value, Markov chains, martingales, generating functions, and more.

Finally, practice with 14 classic probability puzzles — from the Monty Hall problem to the Coupon Collector — each with multiple solution approaches, edge case analysis, and leveled expectations showing what firms expect at each seniority.