Medium Expected Value Interview Questions
Medium is where most real interview questions sit. This is the expected value set worth spending the most time in.
66 questions, all free to practise.
- A convexity gap by JensenMediumRandom VariablesExpected ValueView →
- Aces in a seven-card handMediumCombinatoricsExpected ValueView →
- All six faces (coupon collector)MediumRandom VariablesExpected ValueView →
- An ant returning to its cornerMediumExpected ValueStochastic ProcessesView →
- Balancing six- and eight-sided diceMediumExpected ValueBrainteasersView →
- Boy–girl neighbors in a lineMediumCombinatoricsExpected ValueView →
- Break-even half-spread from toxic flowMediumProbabilityExpected ValueView →
- Break-even half-spread under adverse selectionMediumExpected ValueMarket Making & Betting GamesView →
- Cash out or bustMediumProbabilityExpected ValueView →
- Dice game, up to three rollsMediumExpected ValueStochastic ProcessesView →
- Dice payoff via WaldMediumExpected ValueStochastic ProcessesView →
- Distinct birthdays representedMediumProbabilityExpected ValueView →
- Distinct faces in five rollsMediumCombinatoricsExpected ValueView →
- Distinct faces in three rollsMediumExpected ValueView →
- Empty boxesMediumExpected ValueView →
- Expectation as a sum of tailsMediumRandom VariablesExpected ValueView →
- Expectation of e raised to a normalMediumRandom VariablesExpected ValueView →
- Expected absolute difference of two diceMediumExpected ValueView →
- Expected ascents in a shuffleMediumCombinatoricsExpected ValueView →
- Expected duration of a fair gameMediumExpected ValueStochastic ProcessesView →
- Expected fives before the first sixMediumProbabilityExpected ValueView →
- Expected flips for HHMediumRandom VariablesExpected ValueView →
- Expected flips for HHTMediumExpected ValueStochastic ProcessesView →
- Expected flips for HTMediumExpected ValueStochastic ProcessesView →
- Expected gap on 30-sided diceMediumProbabilityExpected ValueView →
- Expected maximum of three diceMediumRandom VariablesExpected ValueView →
- Expected maximum of two diceMediumRandom VariablesExpected ValueView →
- Expected median of three diceMediumProbabilityExpected ValueView →
- Expected minimum of two diceMediumRandom VariablesExpected ValueView →
- Expected revenue of a Vickrey auctionMediumProbabilityExpected ValueView →
- Expected rolls for two sixes in a rowMediumExpected ValueStochastic ProcessesView →
- Expected sum given both evenMediumConditional Probability & ExpectationExpected ValueView →
- Expected sum of a random subsetMediumExpected ValueView →
- Expected value of the highest cardMediumProbabilityExpected ValueView →
- Fair price of a payout that doubles per headMediumExpected ValueMarket Making & Betting GamesView →
- First consecutive repeatMediumProbabilityExpected ValueView →
- First to three of a kind in a rowMediumProbabilityExpected ValueView →
- Gap between two uniformsMediumExpected ValueStatisticsView →
- Heads given the ends differMediumConditional Probability & ExpectationExpected ValueView →
- Inversions in a shuffleMediumCombinatoricsExpected ValueView →
- Is the random walk squared a martingale?MediumExpected ValueStochastic ProcessesView →
- Law of total varianceMediumConditional Probability & ExpectationExpected ValueView →
- Letters into envelopesMediumProbabilityExpected ValueView →
- Locking a profit by hedging after the odds moveMediumExpected ValueMarket Making & Betting GamesView →
- Memoryless waitingMediumConditional Probability & ExpectationRandom VariablesView →
- Minimum defense frequency against a betMediumProbabilityExpected ValueView →
- Number of runsMediumExpected ValueView →
- Paid only if the last roll winsMediumExpected ValueView →
- Pay to play with a capMediumExpected ValueMarket Making & Betting GamesView →
- Position of the first aceMediumConditional Probability & ExpectationExpected ValueView →
- Position of the first spadeMediumCombinatoricsExpected ValueView →
- Pricing a squared payoffMediumExpected ValueMarket Making & Betting GamesView →
- Product of two dice, doubled on doublesMediumExpected ValueMarket Making & Betting GamesView →
- Ratio of partial sumsMediumRandom VariablesExpected ValueView →
- Red faces on a diced cubeMediumCombinatoricsExpected ValueView →
- Renewal-reward fraction of time runningMediumExpected ValueStochastic ProcessesView →
- Rolling a 5-sided die to reach fiveMediumProbabilityExpected ValueView →
- Rolling until two rolls differ by twoMediumProbabilityExpected ValueView →
- Rolls to a six before a fiveMediumProbabilityExpected ValueView →
- Rolls to see both a 1 and a 2MediumExpected ValueView →
- Rolls until a face repeatsMediumProbabilityExpected ValueView →
- Sharpe ratio in a marble gameMediumExpected ValueStatisticsView →
- The German tank problemMediumExpected ValueStatisticsView →
- The St. Petersburg paradoxMediumExpected ValueMarket Making & Betting GamesView →
- The last lightbulb to burn outMediumRandom VariablesExpected ValueView →
- k-th order statisticMediumExpected ValueStatisticsView →
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