Medium Probability Interview Questions
Medium is where most real interview questions sit. This is the probability set worth spending the most time in.
115 questions, 72 of them free to practise right now.
- A 5 before a 7MediumProbabilityView →
- A cube ending in elevenMediumProbabilityBrainteasersView →
- A low medianMediumProbabilityRandom VariablesView →
- A point near the cone's baseMediumProbabilityCalculusView →
- A prime sum on prime diceMediumProbabilityCombinatoricsView →
- An ace for everyoneMediumProbabilityCombinatoricsView →
- An ace in every pileMediumProbabilityCombinatoricsView →
- Bertrand's boxMediumProbabilityConditional Probability & ExpectationView →
- Cash out or bustMediumProbabilityExpected ValueView →
- Chords that don't crossMediumProbabilityCombinatoricsView →
- Coin sets the number of dice rollsMediumProbabilityConditional Probability & ExpectationView →
- Correlation of two face-countsMediumProbabilityStatisticsView →
- Cosine of a conditional meanMediumProbabilityConditional Probability & ExpectationView →
- Density of a sum of two uniformsMediumProbabilityRandom VariablesView →
- Eight dice summing to twelveMediumProbabilityCombinatoricsView →
- Emptying the cherry bowlMediumProbabilityCombinatoricsView →
- Exactly two aces in a bridge handMediumProbabilityCombinatoricsView →
- Expected fives before the first sixMediumProbabilityExpected ValueView →
- Expected gap on 30-sided diceMediumProbabilityExpected ValueView →
- Expected median of three diceMediumProbabilityExpected ValueView →
- Expected square of a random unit complex numberMediumProbabilityRandom VariablesView →
- Expected value of the highest cardMediumProbabilityExpected ValueView →
- Fair outcome from a biased coinMediumProbabilityStatisticsView →
- First HH on the tenth tossMediumProbabilityCombinatoricsView →
- First consecutive repeatMediumProbabilityExpected ValueView →
- First head on an even flipMediumProbabilityView →
- First head strictly soonerMediumProbabilityRandom VariablesView →
- First to three of a kind in a rowMediumProbabilityExpected ValueView →
- Four fives before the first sixMediumProbabilityRandom VariablesView →
- Four points on a semicircleMediumProbabilityView →
- Four times as long to the first headMediumProbabilityRandom VariablesView →
- Full housesMediumProbabilityCombinatoricsView →
- Gambler's ruinMediumProbabilityStochastic ProcessesView →
- Gambler's ruin (unfair)MediumProbabilityStochastic ProcessesView →
- Letters into envelopesMediumProbabilityExpected ValueView →
- Matching floors of a logarithmMediumProbabilityRandom VariablesView →
- Mean over variance of a nested uniformMediumProbabilityRandom VariablesView →
- Minimum of two exponentialsMediumProbabilityRandom VariablesView →
- Monty HallMediumProbabilityConditional Probability & ExpectationView →
- No face card before the two of heartsMediumProbabilityCombinatoricsView →
- No two neighboring bulbs litMediumProbabilityCombinatoricsView →
- One card each in casino warMediumProbabilityCombinatoricsView →
- One extra roll for more primesMediumProbabilityView →
- One random subset inside anotherMediumProbabilityCombinatoricsView →
- Probability of three of a kindMediumProbabilityCombinatoricsView →
- Product of two uniforms above a halfMediumProbabilityRandom VariablesView →
- 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 →
- Russian roulette, re-spunMediumProbabilityConditional Probability & ExpectationView →
- Simulate probability pMediumProbabilityProgramming & DSAView →
- Smallest simulable probabilityMediumProbabilityBrainteasersView →
- Sum of independent PoissonsMediumProbabilityRandom VariablesView →
- Sum versus twice the differenceMediumProbabilityRandom VariablesView →
- Ten dice, sum divisible by sixMediumProbabilityCombinatoricsView →
- Tennis: two sets or three?MediumProbabilityView →
- The birthday problemMediumProbabilityCombinatoricsView →
- The die that makes sums uniformMediumProbabilityCombinatoricsView →
- The same number of tailsMediumProbabilityCombinatoricsView →
- The third shiny pennyMediumProbabilityCombinatoricsView →
- The two-headed coinMediumProbabilityConditional Probability & ExpectationView →
- Three dots on a squareMediumProbabilityCombinatoricsView →
- Three ones in a rowMediumProbabilityCombinatoricsView →
- Three prisonersMediumProbabilityConditional Probability & ExpectationView →
- Tuning an exponential random walkMediumProbabilityStochastic ProcessesView →
- Two childrenMediumProbabilityConditional Probability & ExpectationView →
- Units digit of a random powerMediumProbabilityCombinatoricsView →
- Variance of the longer pieceMediumProbabilityRandom VariablesView →
- Which deck for two reds?MediumProbabilityView →
- Whose draw is larger?MediumProbabilityView →
- Will they meet?MediumProbabilityView →
- X positive given the sum is positiveMediumProbabilityRandom VariablesView →
- Absorption probability on a lineMediumProbabilityStochastic Processes Premium
- An ace in the handMediumProbabilityCombinatorics Premium
- Arrivals before the rival streamMediumProbabilityStochastic Processes Premium
- At least two sixes in five rollsMediumProbabilityRandom Variables Premium
- Both even given an even sumMediumProbabilityConditional Probability & Expectation Premium
- Break-even half-spread from toxic flowMediumProbabilityExpected Value Premium
- Buyer count in a thinned arrival streamMediumProbabilityStochastic Processes Premium
- Counting straightsMediumProbabilityCombinatorics Premium
- Distinct birthdays representedMediumProbabilityExpected Value Premium
- Expected revenue of a Vickrey auctionMediumProbabilityExpected Value Premium
- Expected steps to first reach a levelMediumProbabilityStochastic Processes Premium
- First to roll a sixMediumProbability Premium
- Five distinct ranksMediumProbabilityCombinatorics Premium
- Four distinct birth monthsMediumProbabilityCombinatorics Premium
- Fourth moment of a shifted normalMediumProbabilityRandom Variables Premium
- HT before HH in coin flipsMediumProbabilityStochastic Processes Premium
- Joint default rangeMediumProbabilityFinance & Derivatives Premium
- Large sum given a sixMediumProbabilityConditional Probability & Expectation Premium
- Minimum defense frequency against a betMediumProbabilityExpected Value Premium
- Minimum given the maximumMediumProbabilityConditional Probability & Expectation Premium
- Monty Hall with 100 doorsMediumProbabilityConditional Probability & Expectation Premium
- Neither die exceeds fourMediumProbabilityRandom Variables Premium
- No two heads in a rowMediumProbabilityCombinatorics Premium
- Prime sumMediumProbability Premium
- Rare-event Poisson approximationMediumProbabilityRandom Variables Premium
- Rolls until a face repeatsMediumProbabilityExpected Value Premium
- Second-price auction strategyMediumProbabilityMarket Making & Betting Games Premium
- Spam filterMediumProbabilityConditional Probability & Expectation Premium
- Stationary distribution of a two-state chainMediumProbabilityStochastic Processes Premium
- Sum of 10 with three diceMediumProbabilityCombinatorics Premium
- The cab problemMediumProbabilityConditional Probability & Expectation Premium
- The larger die shows a 4MediumProbabilityRandom Variables Premium
- The two black aces, side by sideMediumProbabilityCombinatorics Premium
- Two face cardsMediumProbabilityCombinatorics Premium
- Two positive testsMediumProbabilityConditional Probability & Expectation Premium
- Two reds in a row from a shrinking urnMediumProbabilityConditional Probability & Expectation Premium
- Two uniforms summing below a halfMediumProbabilityRandom Variables Premium
- Two uniforms summing past 1.5MediumProbabilityCalculus Premium
- Variance of a stochastic integralMediumProbabilityStochastic Processes Premium
- Variance-minimizing hedgeMediumProbabilityStatistics Premium
- Which coin produced two heads?MediumProbabilityConditional Probability & Expectation Premium
- Winning from deuceMediumProbabilityConditional Probability & Expectation Premium
- Within distance d on the unit intervalMediumProbabilityCalculus Premium
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