Jane Street interview questions

3 rounds of interview 1. A task to complete with Excel, you have 48 hours to complete 2. Tricky ones, like how many books are there in London 3. Basically you become the exchange, and you have to think of the logic of the exchange system for stocks

Phone interview for about 30 minutes. No behavioral questions for the first round. Just quick math. The interviewer was really nice, guide you through the process. Clarified questions really quick. Some basic probability questions and brainteasers.