Hard Hedge Fund Quant Interview Questions
If the standard hedge fund quant set feels comfortable, this is the calibration check.
75 questions, 41 of them free to practise right now. The topics that come up most are probability (35), combinatorics (21), stochastic processes (19), brainteasers (16).
- A Fibonacci power sumHardBrainteasersView →
- A function minus its derivativeHardCalculusView →
- A half-plane, given positiveHardProbabilityRandom VariablesView →
- A second red ball from the same urnHardProbabilityConditional Probability & ExpectationView →
- A three-way race to the first headHardProbabilityRandom VariablesView →
- Balls into bowls, three eachHardCombinatoricsView →
- Counting fives before a four and a sixHardProbabilityRandom VariablesView →
- Covariance of X with Y squaredHardRandom VariablesStatisticsView →
- Covariance with a lognormal childHardConditional Probability & ExpectationRandom VariablesView →
- Dealing until kings or a king-and-aceHardCombinatoricsExpected ValueView →
- Domino tilings of a 3×8 gridHardCombinatoricsView →
- Everyone gets one of eachHardProbabilityCombinatoricsView →
- Filling three bins from a coin flipHardProbabilityCombinatoricsView →
- Guessing cards from a known pileHardProbabilityExpected ValueView →
- HTH before HHTHardProbabilityRandom VariablesView →
- Laplace transform of a Brownian exit timeHardStochastic ProcessesView →
- Making a power of Brownian motion a martingaleHardStochastic ProcessesView →
- Mean of a mean-reverting processHardStochastic ProcessesFinance & DerivativesView →
- More coins, more heads?HardProbabilityCombinatoricsView →
- One of each face before the two of heartsHardProbabilityCombinatoricsView →
- Pirate gameHardMarket Making & Betting GamesView →
- Rotations divisible by 37HardCombinatoricsBrainteasersView →
- Second moment of a Gaussian-kernel stochastic integralHardCalculusStochastic ProcessesView →
- Seven seated in age orderHardProbabilityCombinatoricsView →
- Smallest number with digit product 10000HardCombinatoricsBrainteasersView →
- Sums of fours and fivesHardCombinatoricsBrainteasersView →
- The boy born on a TuesdayHardProbabilityConditional Probability & ExpectationView →
- The drunk passengerHardProbabilityConditional Probability & ExpectationView →
- The frog's single leftward hopHardProbabilityCombinatoricsView →
- The leap-frog's favorite landing spotHardProbabilityStochastic ProcessesView →
- The number with no new digitsHardBrainteasersView →
- The snow plowHardCalculusView →
- The survivor in the circleHardBrainteasersView →
- Three first-heads in non-decreasing orderHardProbabilityRandom VariablesView →
- Triangle with equal side sumsHardCombinatoricsBrainteasersView →
- Twelve balls, one oddHardBrainteasersView →
- Two Brownian values, both positiveHardProbabilityStochastic ProcessesView →
- Two random subsets that overlapHardProbabilityCombinatoricsView →
- Variance under random parametersHardRandom VariablesStatisticsView →
- When a power of the process is a submartingaleHardProbabilityStochastic ProcessesView →
- When a uniform ratio rounds to a squareHardProbabilityRandom VariablesView →
- A void suit in bridgeHardProbabilityCombinatorics Premium
- Ages from product and sumHardCombinatoricsBrainteasers Premium
- Amoeba extinctionHardProbabilityStochastic Processes Premium
- An arithmetic-geometric seriesHardCalculus Premium
- Best-of-seven underdogHardProbabilityRandom Variables Premium
- Blue-eyed islandersHardBrainteasers Premium
- Bluffing frequency in pokerHardProbabilityExpected Value Premium
- Branching process extinction (critical)HardProbabilityStochastic Processes Premium
- Branching process extinction (supercritical)HardProbabilityStochastic Processes Premium
- Connecting noodlesHardProbabilityExpected Value Premium
- Counting two-pair handsHardProbabilityCombinatorics Premium
- Defective stack of coinsHardCombinatoricsBrainteasers Premium
- Deriving the first-price shading factorHardProbabilityExpected Value Premium
- Drunk man on a bridgeHardExpected ValueStochastic Processes Premium
- Exactly one pairHardProbabilityCombinatorics Premium
- Expected flips for HHHHardExpected ValueStochastic Processes Premium
- Expected flips for HTHHardExpected ValueStochastic Processes Premium
- Expected revisits of the start stateHardExpected ValueStochastic Processes Premium
- Four heads in a rowHardExpected ValueStochastic Processes Premium
- Handshakes at a dinner partyHardCombinatoricsBrainteasers Premium
- Hats in a lineHardBrainteasers Premium
- Median of a streamHardStatisticsProgramming & DSA Premium
- Minimum coins where greedy failsHardProgramming & DSA Premium
- Order statistics are BetaHardRandom VariablesStatistics Premium
- Pricing an inverse floaterHardFinance & Derivatives Premium
- Prisoners and the boxesHardProbabilityBrainteasers Premium
- Quadratic variation of a scaled Itô integralHardCalculusStochastic Processes Premium
- Reflected paths ending below the levelHardProbabilityStochastic Processes Premium
- Reflecting wall first-passage timeHardExpected ValueStochastic Processes Premium
- The all-pay auctionHardProbabilityExpected Value Premium
- Triangle from three independent sticksHardProbabilityCalculus Premium
- Triangle that swallows the centerHardProbabilityBrainteasers Premium
- Two eggs, 100 floorsHardBrainteasers Premium
- World Series bettingHardExpected ValueStochastic Processes Premium
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