Jane Street

Interview Question

Assistant Trader Interview

Jane Street

Given an unlimited supply of coins of denominations 3, 8, and 20, what is the smallest positive integer that cannot be formed as a non-negative integer combination of these numbers?

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!