Practice · Quant prep · Timed test
Timed quant papers
Interview papers that start easy and end hard, the way a technical round escalates, or thirty-question rounds on one topic. One question at a time against the clock, then your score and every worked solution.
Interview papers
Firm-style rounds
Each follows the topics that firm says it tests; the Jane Street, Optiver, Citadel, IMC and Five Rings pages explain what the firm publishes about its process. The questions are ours.
Topic rounds
Opens in its own window, so the site stays where it is. Runs like a firm's online assessment: one overall timer, one question at a time, no going back. Numeric answers accept fractions (1/3) or decimals. Enter submits.
What this test contains
Interview papers that start easy and end hard, the way a technical round escalates, or thirty-question rounds on one topic. One question at a time against the clock, then your score and every worked solution.
Probability
Expected value, conditioning, random walks, order statistics and the classic puzzles.
122 questions · 30 questions · 90s each →Brainteasers
Counting, pigeonhole, weighing and logic puzzles, with the short argument that cracks each.
95 questions · 30 questions · 75s each →Stochastic calculus
Brownian motion, Itô’s lemma, martingales, Girsanov and Black–Scholes.
38 questions · 30 questions · 75s each →Statistics & machine learning
Regression, regularisation, classification metrics, estimation and backtest pitfalls.
43 questions · 30 questions · 60s each →Expected value & market making
Fair value, betting and Kelly, options intuition and quoting against informed flow.
34 questions · 30 questions · 75s each →Mental arithmetic
The fast, exact arithmetic trading interviews test under time pressure.
66 questions · 30 questions · 15s each →Three questions from this test
Taken from the banks above, with the worked answers, so you can see the level before you start the clock.
Jane StreetCitadelHudson River Trading
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Jane StreetSIGDRW
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How it is scored
Every question is marked right or wrong as you go; there is no partial credit, exactly as in the real thing. At the end you get your score, the time you used against the time allowed, your average per question and your longest run of correct answers. Every question then comes back with your answer, the correct one and a full worked solution.
Browse every question with its worked solution on the Quant interview prep page. Preparing for the real thing? Quant interview preparation.