Jane Street Assistant Trader Summer Internship Interview Questions | Glassdoor

# Jane Street Assistant Trader Summer Internship Interview Questions

## Interviews at Jane Street

3 Interview Reviews

Experience
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### Getting an Interview   3 Interview Reviews

Getting an Interview
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## Assistant Trader Summer Internship Interview

No Offer
Positive Experience
Difficult Interview

Application

I applied through college or university. The process took 2 weeks. I interviewed at Jane Street (New York, NY) in February 2010.

Interview

30 min 1:1 initial interview on campus consisting of a few minutes of banter about my resume followed by a bunch of relatively simple mental math and probability questions. 2nd and 3rd round phone interviews were similar, but fewer and more difficult questions were asked; both general logic/brainteasers and probability questions (coin flips and dice rolls). No finance or fit questions as expected. After each answer you give they ask how confident you are (in rounds 2 and 3 only). Interviewers were courteous and seemed like they would be good people to work with.

Interview Questions

• How many digits are there in 2^50?   5 Answers
• Flip a coin until either HHT or HTT appears. Is one more likely to appear first? If so, which one and with what probability?   13 Answers

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## Assistant Trader Summer Internship Interview

No Offer

Interview

Given interview after applying online.

Interview Questions

• Basic probability w/ Heads and Tails. Solved from memory of Penney's game sequences/odds.   Answer Question

## Assistant Trader Summer Internship Interview

No Offer
Positive Experience
Difficult Interview

Application

I applied through college or university. I interviewed at Jane Street (Princeton, NJ) in January 2014.

Interview

I applied through my university and heard back soon after the application had closed. There was very little chit-chat over the course of the interview; most of it was simply the guy asking me math/probability questions. This was actually my first ever interview, and I wasn't really expecting it, so it threw me off a little.

Interview Questions

• A survey is given to all passengers on a number of different planes. The survey asks each person how full their plane was. The people answer honestly. If 50% of people claim that their plane was 80% full, while the other 50% claim that their plane was 20% full, how full was the average plane?   2 Answers
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