Brainteasers Interview Questions for Quant Developers
Quant Developers get asked brainteasers differently from other quant roles - the emphasis shifts with what the job actually does. This is that slice.
65 questions, 61 of them free to practise right now. The split is 17 easy, 21 medium, 27 hard.
- A factorial ratio that's a factorialEasyBrainteasersView →
- A multiple of 15 in ones and zerosEasyBrainteasersView →
- A ratio of Fibonacci sumsEasyBrainteasersView →
- A root of a product plus oneEasyBrainteasersView →
- A sum of three cubesEasyBrainteasersView →
- Age in a square yearEasyBrainteasersView →
- An alternating sum of squaresEasyBrainteasersView →
- An infinite nested radicalEasyBrainteasersView →
- Counting nines to 1000EasyCombinatoricsBrainteasersView →
- Guessing a number with high-low hintsEasyBrainteasersProgramming & DSAView →
- Integers that contain a zeroEasyCombinatoricsBrainteasersView →
- Polygons with integer anglesEasyBrainteasersView →
- Smallest multiple of 77 past 700000EasyBrainteasersView →
- Solving a linear Diophantine equationEasyBrainteasersView →
- The largest unmakeable postageEasyBrainteasersView →
- Three switches, one bulbEasyBrainteasersView →
- When the colony outgrows its life supportEasyBrainteasersCalculusView →
- 1000 bottles, one poisonedMediumBrainteasersView →
- 25 horses, 5 tracksMediumBrainteasersView →
- A cube ending in elevenMediumProbabilityBrainteasersView →
- Adults before the busMediumBrainteasersView →
- Age a fraction of the birth yearMediumBrainteasersView →
- Deleting every other number on a circleMediumCombinatoricsBrainteasersView →
- Digits multiplying to half the numberMediumBrainteasersView →
- Digits of concatenated powersMediumBrainteasersView →
- Distinct die labelingsMediumCombinatoricsBrainteasersView →
- Enlarging a square orchardMediumBrainteasersView →
- Odd multiples of threeMediumCombinatoricsBrainteasersView →
- One hundred light bulbsMediumBrainteasersView →
- Rebuilding a tower of ten ringsMediumBrainteasersProgramming & DSAView →
- Regions from ten linesMediumCombinatoricsBrainteasersView →
- Smallest simulable probabilityMediumProbabilityBrainteasersView →
- Sum of the pandigital numbersMediumCombinatoricsBrainteasersView →
- Summing digits to a millionMediumCombinatoricsBrainteasersView →
- The bridge crossingMediumBrainteasersView →
- The most balanced factorizationMediumBrainteasersView →
- Three-four-five in Pascal's triangleMediumCombinatoricsBrainteasersView →
- A Fibonacci power sumHardBrainteasersView →
- A flea's shortest escape across a boxHardBrainteasersCalculusView →
- A geometric series that sums to a squareHardBrainteasersView →
- A weighted sum of binomialsHardCombinatoricsBrainteasersView →
- Average of near-diagonal numbersHardCombinatoricsBrainteasersView →
- Cats and miceHardBrainteasersView →
- Cubes over the terminating denominatorsHardBrainteasersCalculusView →
- Digits with distinct pairwise sumsHardCombinatoricsBrainteasersView →
- Doors toggled by primesHardCombinatoricsBrainteasersView →
- Largest pairwise-coprime subset sumHardCombinatoricsBrainteasersView →
- Locks for a four-of-seven safeHardCombinatoricsBrainteasersView →
- Measuring two pintsHardBrainteasersView →
- Pairing with a difference of 1 or 11HardCombinatoricsBrainteasersView →
- Rotations divisible by 37HardCombinatoricsBrainteasersView →
- Shuffles to restore the deckHardCombinatoricsBrainteasersView →
- Smallest number with digit product 10000HardCombinatoricsBrainteasersView →
- Sum of repeating decimalsHardCombinatoricsBrainteasersView →
- Sums of fours and fivesHardCombinatoricsBrainteasersView →
- The number with no new digitsHardBrainteasersView →
- The survivor in the circleHardBrainteasersView →
- Three eggs, nine dropsHardCombinatoricsBrainteasersView →
- Triangle with equal side sumsHardCombinatoricsBrainteasersView →
- Twelve balls, one oddHardBrainteasersView →
- When k-to-the-k is a squareHardCombinatoricsBrainteasersView →
- Last two digits of a powerMediumCombinatoricsBrainteasers Premium
- Last one standingHardCombinatoricsBrainteasers Premium
- Prisoners and the boxesHardProbabilityBrainteasers Premium
- Two eggs, 100 floorsHardBrainteasers Premium
Widen the search
This set is a slice of two larger ones. If it is too narrow, start here instead:
Practise these free
Create a free account to check your answers, track what you have solved, and run the timed simulators. Premium unlocks a full worked solution for every question.