Jane Street

Interview Question

Trader Interview
Jane Street

A steel ball with an 8 cm diameter weighs 8 ounces. How much does a steel ball with a 12 cm diameter weigh, assuming both balls are made of the same material?

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!