Master 100+ brain teasers, probability questions, and logic puzzles used in quantitative trading interviews. Get step-by-step solutions and practice with problems from Jane Street, Citadel, Two Sigma, and other top firms.
Classic logic puzzles and reasoning problems commonly asked in quant interviews.
Probability and statistics problems with detailed explanations and calculations.
Market-making problems, arbitrage opportunities, and trading scenarios.
Advanced mathematical problems and computational challenges.
Start both hourglasses simultaneously at time 0.
At time 4 minutes, the 4-minute hourglass finishes. Flip it immediately.
At time 7 minutes, the 7-minute hourglass finishes. Flip the 4-minute hourglass again.
At time 9 minutes (7 + 2), the 4-minute hourglass will finish again. Total time = 9 minutes.
Quant interviews typically include logic puzzles, probability problems, market-making scenarios, and mathematical challenges. Common topics include coin flipping, dice problems, optimization, and statistical reasoning.
Start by understanding the problem clearly, ask clarifying questions, think out loud, break down complex problems into smaller parts, and always explain your reasoning process. Interviewers care more about your thought process than getting the exact answer.
Yes! Many brain teasers follow similar patterns: probability calculations, optimization problems, logical reasoning, and mathematical proofs. Understanding these patterns helps you solve new problems more efficiently.