Jane Street

Interview Question

Quantitative Trader - Intern Interview
Jane Street

There are 1000 people in a hall. One person has their hand painted. Every minute, everyone shakes hands with someone else. How much time is needed to paint all the hands? What is the best-case scenario? What is the worst-case scenario?

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!