Jane Street

Interview Question

Trading Interview
Jane Street

You have a six-sided die. Each time you roll, you add the result to your current sum, starting from 0. After each roll, if the sum becomes a perfect square, the game ends and you lose all your money; otherwise, you can choose to continue rolling or stop and keep the current sum. If your current sum is 35, should you continue playing or stop?

Unlock the Full Solution

Enter your email to get instant access to the complete solution, explanation, and similar practice problems.

Insights on 100+ quant firms, understand where to apply, and maximize your chances.

Get the official 2025 QB Quant Firm Tier List

Check your email inbox — you should get the interview in 1-2 minutes!