Quant interview problem library
2,516 interview problems covering probability, combinatorics, options, brainteasers, stochastic processes, coding, and more. Filter the interactive library by firm, topic, or difficulty, or start with a worked example below.
Start free — no card → See membershipBrowse by topic
- Probability interview questions1,130 problems · 30 free previews
- Combinatorics interview questions315 problems · 15 free previews
- Options interview questions303 problems · 15 free previews
- Brainteasers interview questions263 problems · 13 free previews
Browse by firm
- Jane Street interview questions1,315 tagged problems · 73 free previews
- SIG (Susquehanna) interview questions1,233 tagged problems · 81 free previews
- D. E. Shaw interview questions1,229 tagged problems · 74 free previews
- Five Rings interview questions884 tagged problems · 60 free previews
- Citadel interview questions596 tagged problems · 42 free previews
- Optiver interview questions273 tagged problems · 20 free previews
- IMC interview questions239 tagged problems · 18 free previews
- Hudson River Trading interview questions147 tagged problems · 14 free previews
- Two Sigma interview questions226 tagged problems · 12 free previews
- Akuna Capital interview questions200 tagged problems · 15 free previews
Free worked examples
- Coupon collectorProbability · full worked solution
- Pattern raceProbability · full worked solution
- Fair game paradoxProbability · full worked solution
- Pattern recurrenceProbability · full worked solution
- Triangle inequalityProbability · full worked solution
- Conditional matchingCombinatorics · full worked solution
- Random chord geometryCombinatorics · full worked solution
- Indicator linearityCombinatorics · full worked solution
- Butterfly spreadOptions · full worked solution
- Put-call gamma parityOptions · full worked solution
- Jump-diffusion option pricingOptions · full worked solution
- Jeep problemBrainteasers · full worked solution
- Collision symmetryBrainteasers · full worked solution
- Self-referential truth countBrainteasers · full worked solution
- Tigers and a sheepBrainteasers · full worked solution
Want the complete filterable bank? The interactive library includes all 2,516 problems, progressive hints, accepted answers, notes, bookmarks, and progress tracking.