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Quant interview prep, the whole thing.
1,903 questions with full worked solutions, role guides, week-by-week roadmaps, and timed mocks. Everything you need to land the seat.
A fair coin is flipped until the first heads. What is the expected number of flips?
2. It is geometric with p = 1/2, so the expected count is 1/p = 2.
1,903 questions, every one worked out
Probability, statistics, brainteasers, mental math, coding, and market making. Filter by topic, company, or difficulty. Full solutions, not just answers.
Open the bank →Company guides
Prop · Buy-side · Sell-sideHow top firms interview, the rounds and what they test, plus which firms recruit from Indian campuses.
Open →Quant roles
4 roles comparedResearcher, Trader, Developer, Risk. What each does day to day, and how their interviews differ.
Open →Prep roadmaps
3 tracksWeek-by-week plans for trader, researcher, and developer interviews, with progress saved in your browser.
Open →Mock interviews
6 timed setsSimulate a real round against the clock, a trading screen, a QR screen, a dev round, then review every answer.
Open →Books & resources
Curated shortlistThe books, courses, and tools actually worth your time, each with an honest one-line note. Mostly free.
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