Combinatorics Questions for Hedge Fund Quant Interviews
A hedge fund quant round does not test combinatorics the way a textbook does. This set is the overlap - the combinatorics questions that actually turn up in this format.
61 questions, 41 of them free to practise right now. The split is 7 easy, 33 medium, 21 hard.
- A divisor of a power of tenEasyProbabilityCombinatoricsView →
- An odd subset with two small elementsEasyCombinatoricsView →
- Counting 8-bit stringsEasyCombinatoricsView →
- Counting nines to 1000EasyCombinatoricsBrainteasersView →
- Even numbers, distinct digitsEasyCombinatoricsView →
- Integers that contain a zeroEasyCombinatoricsBrainteasersView →
- MISSISSIPPI with the P's togetherEasyCombinatoricsView →
- Anagrams of LOLLIPOPMediumCombinatoricsView →
- Distinct die labelingsMediumCombinatoricsBrainteasersView →
- Keeping two apartMediumCombinatoricsView →
- Lattice paths in 3DMediumCombinatoricsView →
- No two evens adjacentMediumCombinatoricsView →
- Odd multiples of threeMediumCombinatoricsBrainteasersView →
- Odd solutions to a sumMediumCombinatoricsView →
- One random subset inside anotherMediumProbabilityCombinatoricsView →
- Placing operators among digitsMediumCombinatoricsView →
- Probability of three of a kindMediumProbabilityCombinatoricsView →
- Regions from ten linesMediumCombinatoricsBrainteasersView →
- Sum of multinomial coefficientsMediumCombinatoricsView →
- Summing digits to a millionMediumCombinatoricsBrainteasersView →
- Ten dice, sum divisible by sixMediumProbabilityCombinatoricsView →
- Terms in a multinomial expansionMediumCombinatoricsView →
- The die that makes sums uniformMediumProbabilityCombinatoricsView →
- Three-four-five in Pascal's triangleMediumCombinatoricsBrainteasersView →
- Trailing zeros of 100!MediumCombinatoricsView →
- Units digit of a random powerMediumProbabilityCombinatoricsView →
- Balls into bowls, three eachHardCombinatoricsView →
- 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 →
- More coins, more heads?HardProbabilityCombinatoricsView →
- One of each face before the two of heartsHardProbabilityCombinatoricsView →
- Rotations divisible by 37HardCombinatoricsBrainteasersView →
- 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 frog's single leftward hopHardProbabilityCombinatoricsView →
- Triangle with equal side sumsHardCombinatoricsBrainteasersView →
- Two random subsets that overlapHardProbabilityCombinatoricsView →
- A relay team with a feudMediumCombinatorics Premium
- Aces in a seven-card handMediumCombinatoricsExpected Value Premium
- An ace in the handMediumProbabilityCombinatorics Premium
- CompositionsMediumCombinatorics Premium
- Counting straightsMediumProbabilityCombinatorics Premium
- Five distinct ranksMediumProbabilityCombinatorics Premium
- Identical balls, no empty boxMediumCombinatorics Premium
- Last two digits of a powerMediumCombinatoricsBrainteasers Premium
- No two heads in a rowMediumProbabilityCombinatorics Premium
- Position of the first spadeMediumCombinatoricsExpected Value Premium
- Subsets with no neighborsMediumCombinatorics Premium
- The two black aces, side by sideMediumProbabilityCombinatorics Premium
- Three unlabeled teamsMediumCombinatorics Premium
- Two face cardsMediumProbabilityCombinatorics Premium
- A void suit in bridgeHardProbabilityCombinatorics Premium
- Ages from product and sumHardCombinatoricsBrainteasers Premium
- Counting two-pair handsHardProbabilityCombinatorics Premium
- Defective stack of coinsHardCombinatoricsBrainteasers Premium
- Exactly one pairHardProbabilityCombinatorics Premium
- Handshakes at a dinner partyHardCombinatoricsBrainteasers Premium
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