Quant Interview
Probability Questions

Practice difficult probability questions for interviews!

Firm-specific preparation

Practice interview questions by firm

Preparing for a specific quant firm? Practice questions selected for the interview process at each firm.

Optiver Interview Questions → Jane Street Interview Questions → SIG Interview Questions → Citadel Interview Questions → IMC Interview Questions → Akuna Capital Interview Questions → Hudson River Trading Interview Questions → BlackEdge Interview Questions → Chicago Trading Company Interview Questions → DRW Interview Questions → Five Rings Interview Questions → Flow Traders Interview Questions →

Name

Category

Difficulty

Bacteria Spread

Problem Solving

Medium

Deranged Favors

Problem Solving

Medium

Reservations

Problem Solving

Medium

NBA Finals

Optimisation

Hard

Expected Game

Problem Solving

Easy

Marble Bag Pull

Optimisation

Easy

Odd Tailing

Problem Solving

Easy

Lucky 3

Optimisation

Medium

Bayes Coins

Problem Solving

Easy

The Tiebreaker

Problem Solving

Medium

Exponential Wins

Optimisation , Strategy

Medium

Archer Trade-off

Optimisation

Medium

Distinct Edges

Problem Solving

Easy

Declining Values

Problem Solving

Medium

Coin Case

Problem Solving

Medium

Intersect Probabilities

Problem Solving

Medium

Car Beeps

Problem Solving

Easy

Unfair Advantage

Problem Solving

Medium

Four and Heads

Problem Solving

Easy

Card EV

Problem Solving

Medium

Terminating Cards

Problem Solving

Medium

Kookaburra

Problem Solving

Easy

Stick Breaker

Problem Solving

Easy

Coin Toss Champion

Strategy

Medium

Defective Coin

Problem Solving

Medium

Extinct Species

Problem Solving

Medium

Imperfect Cubes

Optimisation , Strategy

Medium

Greedy Dice

Optimisation , Strategy

Hard

Optimal Solution

Optimisation , Problem Solving

Hard

Tennis Game 2

Optimisation

Hard

Birthday Twins

Problem Solving

Medium

Stranded Explorer

Problem Solving

Medium

Dice Game Show

Optimisation

Medium

Dice Recursion

Problem Solving

Medium

Terminating Coins

Problem Solving

Medium

50 Coin Challenge

Optimisation , Strategy

Medium

Pogo Stick

Optimisation

Easy

Stock Betting

Optimisation

Medium

Self Reproduction

Problem Solving

Medium

Even or Odd

Problem Solving

Easy

Perfect Coin and Die

Optimisation , Problem Solving

Hard

All Sixes

Problem Solving

Medium

Die Optimisation

Optimisation , Strategy

Hard

Ten Multiples

Optimisation , Problem Solving

Medium

Random Walks

Problem Solving

Medium

Precise Heads

Problem Solving

Easy

Multi Dimensions

Random_walk

Hard

First to Seven

Problem Solving

Easy

The End

Game_theory

Hard

Archer Shoot Out

Problem Solving

Easy

Step Probabilities

Problem Solving

Easy

Dice Pull Out

Optimisation

Hard

Cyclone Hazards

Problem Solving

Hard

Not So Perfect Squares

Optimisation , Strategy

Hard

Roll to Play

Strategy

Easy

Shooting Threes

Optimisation

Easy

Dice and Coin

Strategy

Easy

Markov Scissors

Strategy

Hard

Bull Market

Problem Solving

Medium

Combined Lovers

Problem Solving

Easy

Greedy Dice 2

Optimisation

Hard

Stirling's Team

Problem Solving

Hard

Order Dice

Strategy

Hard

Profitable Days

Problem Solving

Hard

Coin Flip Pattern

Problem Solving

Easy

Team Changes

Problem Solving

Hard

Compounding Returns

Game_theory

Medium

Tennis Game

Optimisation

Medium

triple-dice

Combinatorics

Medium

Even Steven

Combinatorics

Medium

Store Purchases

Problem Solving

Medium

Primed Up

Optimisation , Problem Solving

Medium

Here's the Kicker

Optimisation

Medium

Stock Swings

Optimisation

Hard

Consecutive Tosses

Problem Solving

Medium

Exponent Losses

Optimisation , Problem Solving

Medium

Maximum Distance

Problem Solving

Medium

Cars

Problem Solving

Medium

Increasing Wins

Strategy

Medium

Special Dice

Strategy

Medium

Prime Roller

Problem Solving

Hard

Lucky Six

Problem Solving

Easy

Expected Sum

Problem Solving

Easy

Carnival Odds

Problem Solving

Medium

Tiebreak Mania

Optimisation

Medium

Species Die Out

Problem Solving

Medium

Pogo Swings

Problem Solving

Hard

The Book Keeper

Problem Solving

Medium

Random Walk Bet

Problem Solving

Easy

Shy Friend

Problem Solving

Medium

Precise Archery

Optimisation

Medium

Bacteria Growth

Problem Solving

Medium

Expected Heads

Problem Solving

Easy

Lovers, Not Haters

Problem Solving

Medium

Roll It All

Problem Solving

Medium

All Outcomes

Problem Solving

Hard

Three Round Games

Problem Solving

Medium

Optimal Round

Optimisation

Hard

Rock, Scissors, Paper

Optimisation

Medium

Important Meeting

Problem Solving

Medium

Full House

Problem Solving

Medium

Side Bets

Problem Solving

Hard

Wall Street Bets

Problem Solving

Medium

Coin Flippa

Optimisation

Medium

Cash King

Optimisation

Medium

A Quant's Gamble

Game_theory

Medium

Double Head

Conditional

Medium

Switch Up

Problem Solving

Medium

Best Candidate

Game_theory

Medium

Betting Size

Optimisation

Medium

Cyclone Season

Problem Solving

Hard

Biased Patterns

Problem Solving

Hard

Activity Building

Problem Solving

Hard

Game Items

Optimisation

Hard

Clock It

Optimisation

Hard

iRobot

Problem Solving

Hard

Expected Balls

Problem Solving

Hard

Averages

Problem Solving

Hard

Optimising Profits

Optimisation

Hard

Noodles

Problem Solving

Hard

First to Six

Problem Solving

Hard

Intersecting Intervals

Problem Solving

Hard

Tetrahedron Inception

Problem Solving

Hard

Two Best Candidates

Game_theory

Hard

Sock Colors

Problem Solving

Hard

Double Dice

Optimisation

Hard

Wrong Seat

Problem Solving

Hard

Guess my Number!

Strategy

Hard

Discrete Coin Tossing

Optimisation

Medium

Changing Coin

Optimisation

Medium

Decreasing Values

Problem Solving

Medium

Lottery Winner

Optimisation

Medium

Showing 1-25 of

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