Expected Value Interview Questions
Expected value is how traders price decisions. These questions train the EV reasoning behind games, bets, and stopping problems that interviews love to test.
72 expected value questions · 22 free to practise now.
- Aces in a five-card handEasyCombinatoricsExpected ValueView →
- Asking around for a birthday matchEasyProbabilityExpected ValueView →
- Even die, conditional meanEasyConditional Probability & ExpectationExpected ValueView →
- Expected flips to first headEasyProbabilityExpected ValueView →
- Expected profit of a paid dice rollEasyExpected ValueMarket Making & Betting GamesView →
- Fair price of a heads payoutEasyProbabilityExpected ValueView →
- Fair price of one rollEasyExpected ValueMarket Making & Betting GamesView →
- Fixed points of a shuffleEasyCombinatoricsExpected ValueView →
- High die, conditional meanEasyConditional Probability & ExpectationExpected ValueView →
- Make a market on a coin's heads countEasyProbabilityExpected ValueView →
- Mean of an exponentialEasyRandom VariablesExpected ValueView →
- Minimum of four uniformsEasyExpected ValueStatisticsView →
- One re-roll allowedEasyExpected ValueView →
- Product of two diceEasyExpected ValueMarket Making & Betting GamesView →
- Rolls to see a 6EasyProbabilityExpected ValueView →
- Seeing both facesEasyExpected ValueView →
- Shared-birthday pairsEasyProbabilityExpected ValueView →
- Sum of three diceEasyExpected ValueMarket Making & Betting GamesView →
- Sum of two dice marketEasyExpected ValueMarket Making & Betting GamesView →
- All six faces (coupon collector)MediumRandom VariablesExpected ValueView →
- Expected maximum of two diceMediumRandom VariablesExpected ValueView →
- First consecutive repeatMediumProbabilityExpected ValueView →
- Coupon collector as a Markov chainMediumExpected ValueStochastic Processes Premium
- Dice game, up to three rollsMediumExpected ValueStochastic Processes Premium
- Dice payoff via WaldMediumExpected ValueStochastic Processes Premium
- Distinct birthdays representedMediumProbabilityExpected Value Premium
- Distinct faces in three rollsMediumExpected Value Premium
- Edge from a biased coinMediumProbabilityExpected Value Premium
- Empty boxesMediumExpected Value Premium
- Expectation as a sum of tailsMediumRandom VariablesExpected Value Premium
- Expectation of e raised to a normalMediumRandom VariablesExpected Value Premium
- Expected flips for HHTMediumExpected ValueStochastic Processes Premium
- Expected flips for HTMediumExpected ValueStochastic Processes Premium
- Expected profit under a fair betting ruleMediumExpected ValueStochastic Processes Premium
- Fair price of a three-flip heads gameMediumProbabilityExpected Value Premium
- Gap between two uniformsMediumExpected ValueStatistics Premium
- House edge in rouletteMediumProbabilityExpected Value Premium
- Inversions in a shuffleMediumCombinatoricsExpected Value Premium
- Is the random walk squared a martingale?MediumExpected ValueStochastic Processes Premium
- Letters into envelopesMediumProbabilityExpected Value Premium
- Make a market on a dieMediumExpected ValueMarket Making & Betting Games Premium
- Memoryless waitingMediumConditional Probability & ExpectationRandom Variables Premium
- Number of runsMediumExpected Value Premium
- Pay to play with a capMediumExpected ValueMarket Making & Betting Games Premium
- Pricing a digital die betMediumProbabilityExpected Value Premium
- Renewal-reward fraction of time runningMediumExpected ValueStochastic Processes Premium
- Splitting a known sumMediumConditional Probability & ExpectationExpected Value Premium
- The St. Petersburg paradoxMediumExpected ValueMarket Making & Betting Games Premium
- Three rolls, keep the lastMediumExpected Value Premium
- Variance from a uniform dieMediumRandom VariablesExpected Value Premium
- k-th order statisticMediumExpected ValueStatistics Premium
- Bluffing frequency in pokerHardProbabilityExpected Value Premium
- Connecting noodlesHardProbabilityExpected Value Premium
- Cycles in a shuffleHardCombinatoricsExpected Value Premium
- Draws until a smaller valueHardExpected Value Premium
- Drunk man on a bridgeHardExpected ValueStochastic Processes Premium
- Expected duration of a fair walkHardExpected ValueStochastic Processes Premium
- Expected flips for HHHardRandom VariablesExpected Value Premium
- Expected flips for HHHHardExpected ValueStochastic Processes Premium
- Expected flips for HTHHardExpected ValueStochastic Processes Premium
- Expected visits before absorptionHardExpected ValueStochastic Processes Premium
- First passage of a drifting walkHardExpected ValueStochastic Processes Premium
- First-price auction shadingHardProbabilityExpected Value Premium
- Four heads in a rowHardExpected ValueStochastic Processes Premium
- Law of total varianceHardConditional Probability & ExpectationExpected Value Premium
- Optional stopping between +3 and −5HardExpected ValueStochastic Processes Premium
- Position of the first aceHardConditional Probability & ExpectationExpected Value Premium
- Repainting balls to one colorHardExpected ValueStochastic Processes Premium
- The all-pay auctionHardProbabilityExpected Value Premium
- The two-envelopes paradoxHardProbabilityConditional Probability & Expectation Premium
- Uniforms summing past 1HardRandom VariablesExpected Value Premium
- World Series bettingHardExpected ValueStochastic Processes Premium
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