Jane Street

www.janestreet.com
www.janestreet.com

# Jane Street Summer Internship Interview Questions

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## Summer Internship Interview

Application Details

I applied online. The process took 2 weeksinterviewed at Jane Street in February 2012.

Interview Details

Several rounds of phone interviews, consisting of mental math, probability questions and brain teasers. They ask you about how confident you are about your answer and make you to bet (virtual) money on your answer.

Interview Questions
• A bus pulls up to a stop. 3/4 of the people get off and 7 get on. Repeat two more stops with the same results.

What is the smallest number of people that could’ve initially been on the bus??

View Answers (3)
• Suppose you are given the opportunity to bid for a treasure chest, which you know to be priced uniformly anywhere between £0-£1000. If you bid equal to or above the price, you win the treasure chest (at the cost of your bid). If you bid below the price, you do not earn the treasure chest.
Now, also suppose you can sell the treasure chest for 1.5 times the price of the treasure chest (should you obtain the chest). What should your bid be?

View Answers (4)
No Offer
Positive Experience
Difficult Interview

1.

## Summer Internship Interview

Application Details

I applied online. The process took a dayinterviewed at Jane Street in January 2010.

Interview Details

Phone interview after application through internet

Interview Questions
• here were a few bunch of simple math questions and some probability questions. If you toss 4 coins and get 1 dollar for each heads, how much are you willing to pay to play the game? What if you have the chance to toss again one coin? What about two?   View Answer
No Offer
Difficult Interview
2.

## Summer Internship Interview

Application Details

The process took a dayinterviewed at Jane Street in February 2009.

Interview Details

Interviewed through on campus recruiting. The interview was all mathematics, but the problems they gave were interesting!

Interview Questions
No Offer
Positive Experience
Difficult Interview

## Jane Street

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