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104 questions from Jane Street quant interviews
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104
Questions
Tags
10 Die Sum
Medium
CombinatoricsProbability
100 Lights
Medium
Brainteasers
2 Below I
Medium
GamesProbability
20-30 Die Split I
Medium
CombinatoricsExpected ValueConditional ExpectationProbability
20-30 Die Split II
Medium
CombinatoricsConditional ProbabilityConditional ExpectationExpected ValueProbability
30 Side Difference
Easy
CombinatoricsExpected ValueDiscrete Random VariablesProbability
Adult Concert
Medium
CombinatoricsBrainteasers
Bacterial Survival II
Medium
Conditional ProbabilityProbability
Bad Bagel
Easy
Expected ValueConditional ExpectationProbability
Basic Dice Game I
Easy
Expected ValueConditional ExpectationProbability
Basic Die Game VI
Medium
GamesConditional ExpectationExpected ValueProbability
Battery Light Bulb
Hard
⭐ RealBrainteasersCombinatorics
Better in Red III
Medium
Conditional ProbabilityProbability
Better In Red IV
Medium
Conditional ProbabilityProbability
Betting Orbs
Medium
GamesConditional ProbabilityConditional ExpectationProbability
Big Smalls
Medium
GamesExpected ValueProbability
Bridge Crossing
Easy
Brainteasers
Bus Wait II
Medium
Conditional ExpectationExpected ValueContinuous Random VariablesProbability
Car Crashes
Easy
EventsProbability
Card Bet Higher
Easy
⭐ RealProbabilityExpected Value
Card Suit Auction
Hard
⭐ RealGame TheoryStrategyExpected Value
Circular Birthdays
Easy
CombinatoricsProbability
Clock Angle I
Easy
Brainteasers
Clock Angle II
Easy
Brainteasers
Coin Pair I
Easy
CombinatoricsProbability
Coin Pair II
Easy
CombinatoricsProbability
Coin Pair III
Medium
CombinatoricsProbability
Coin Pair IV
Medium
CombinatoricsProbability
Coin Pair V
Medium
CombinatoricsProbability
Coin Sequence Choice
Hard
⭐ RealProbabilityGame TheoryMarkov Chains
Colorless Sides
Medium
Conditional ProbabilityProbability
Cube Colorer
Easy
Conditional ProbabilityProbability
Dice Sum Box Auction
Hard
⭐ RealGame TheoryExpected ValueProbability
Digit Multiplication I
Medium
Brainteasers
Digit Multiplication II
Medium
Brainteasers
DisCard Game
Easy
Brainteasers
Distinct Date I
Medium
Brainteasers
Distinct Date II
Medium
Brainteasers
Dot Removal
Easy
Conditional ProbabilityProbability
Even Product Dice
Easy
⭐ RealExpected ValueProbabilityDice
Extra Coin
Easy
Conditional ProbabilityDiscrete Random VariablesProbability
Face Value
Easy
Conditional ExpectationExpected ValueGamesProbability
Ferry Stops
Easy
Brainteasers
Fishy Bear
Easy
Conditional ProbabilityProbability
Full Solutions
Easy
Pure Math
Gold Coin Other Box
Easy
⭐ RealProbabilityBayesianBrainteasers
Half Cycle
Hard
CombinatoricsCalculusExpected ValueProbability
Hand Meet
Easy
Brainteasers
Health Battle Game
Hard
⭐ RealGame TheoryStrategy
Horse Racing
Medium
Brainteasers
HTH Before HHT
Hard
⭐ RealProbabilityMarkov ChainsBrainteasers
Infected Dinner I
Easy
Brainteasers
Infected Dinner II
Hard
Brainteasers
Land Value Expected
Easy
⭐ RealExpected ValueProbability
Lawn Teamwork
Easy
Brainteasers
Least Multiple of 15
Easy
Brainteasers
Lily Pad Thousand
Easy
⭐ RealBrainteasersAlgebra
Matching Socks I
Easy
Brainteasers
Modified Even Coins
Easy
Conditional ProbabilityProbability
No Rock
Easy
GamesProbability
Number Selection Penalty
Hard
⭐ RealGame TheoryExpected Value
Observing Cars
Easy
EventsProbability
Odd Coin Flips
Medium
Conditional ProbabilityDiscrete Random VariablesProbability
Odd Sum Card Bet
Medium
⭐ RealProbabilityExpected ValueCombinatorics
Optimal Card Deck
Hard
⭐ RealGame TheoryOptimizationExpected Value
Paired Pumpkins I
Easy
Linear AlgebraBrainteasers
Paired Pumpkins II
Medium
Brainteasers
Penny Stack
Medium
Brainteasers
Perfect Seating I
Easy
CombinatoricsProbability
Picky Primes
Easy
EventsCombinatoricsProbability
Plane Partition
Medium
CombinatoricsProbability
Planets Aligned
Easy
Brainteasers
Poisoned Kegs I
Medium
Brainteasers
Poisoned Kegs II
Medium
Brainteasers
Poisoned Kegs III
Medium
Brainteasers
Poisoned Kegs IV
Hard
Brainteasers
Poker Chip Distribution
Hard
⭐ RealGame TheoryProbabilityExpected Value
Power Grid
Medium
CombinatoricsProbability
Prime Pair
Easy
CombinatoricsConditional ProbabilityProbability
Prime Subset
Hard
Brainteasers
Prime Sum
Easy
CombinatoricsProbability
Probability of Unfair Coin I
Easy
Conditional ProbabilityProbability
Probability of Unfair Coin II
Easy
Conditional ProbabilityProbability
River Boat Width
Medium
⭐ RealBrainteasersAlgebra
River Length
Easy
Brainteasers
River Swimmer Width
Medium
⭐ RealBrainteasersAlgebra
Roll Until Six
Easy
⭐ RealExpected ValueProbabilityGeometric Distribution
Russian Roulette I
Medium
Conditional ProbabilityProbability
Russian Roulette II
Medium
Conditional ProbabilityProbability
Russian Roulette III
Easy
Conditional ProbabilityProbability
Russian Roulette IV
Easy
Conditional ProbabilityProbability
Same Month
Easy
CombinatoricsBrainteasers
Silent Auction Flips
Hard
⭐ RealGame TheoryExpected ValueProbability
Solo or Pair
Medium
CombinatoricsBrainteasers
Stamp Sum
Easy
Brainteasers
Stranded at Sea
Easy
EventsProbability
Ten Box Silent Bid
Hard
⭐ RealGame TheoryExpected ValueNash Equilibrium
The Big Three
Easy
EventsCombinatoricsProbability
Three Coin Bayes
Medium
⭐ RealProbabilityBayesian
Three Repeat I
Easy
CombinatoricsProbability
Two Consecutive Heads
Medium
⭐ RealExpected ValueProbabilityMarkov Chains
Two Dice vs One Dice
Medium
⭐ RealProbabilityDiceCombinatorics
Two Urns Bayes
Easy
⭐ RealProbabilityBayesian
Windless Mile
Easy
Brainteasers
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