Jane StreetTraderTrading InternQuestion #574

We're going to play a game. You go first. You flip a coin; if you get heads, I give you $30. If you get tails, you give me the coin and I flip. If I get heads, you give me $30; if I get tails, I give it back to you. We keep going until one of us gets heads. What is the maximum amount you would be willing to pay to go first? Give a 50% confidence range and a 90% one for your answer. Why?

Unlock the Full Solution

Enter your email to get the detailed step-by-step solution to this Jane Street interview question, plus access to free interview prep resources.

We'll also send you a free HFT mock interview video.

Get All 664+ Jane Street Questions with Solutions

Plus 16+ hours of video lectures, resume tailoring, and 1:1 mentorship from quants.

Schedule a Call