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Quantitative Research Intern Interview Questions

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3,500 quantitative research intern interview questions shared by candidates

Let's play a game: There are 3 white balls and 4 black balls in a black box. If you get a white ball out your payoff +1, and -1 with a black ball. You can stop anytime and repeat the game infinite times. Will you play the game?
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Quantitative Researcher

Interviewed at WorldQuant

4.2★
Dec 14, 2016

Let's play a game: There are 3 white balls and 4 black balls in a black box. If you get a white ball out your payoff +1, and -1 with a black ball. You can stop anytime and repeat the game infinite times. Will you play the game?

10 island in a line. Two bridges between two consecutive island. one is okay, one is broken. If you take the broken bridge, you will falls into water and taken back to the start. start from the first island,find the expected number of time u cross the non-broken bridges when you reach the end.
avatar

Quantitative Researcher

Interviewed at WorldQuant

4.2★
Oct 19, 2016

10 island in a line. Two bridges between two consecutive island. one is okay, one is broken. If you take the broken bridge, you will falls into water and taken back to the start. start from the first island,find the expected number of time u cross the non-broken bridges when you reach the end.

Robot wakes up every morning and does one of the following things with equal (1/4) probability: 1) self-destroys; 2) does nothing; 3) clones himself (so you have 2 robots); 4) clones himself two times (so you have 3 robots). If you have one robot at the start of the first day, what is the probability that, eventually, you will have no robots?
avatar

Quantitative Researcher

Interviewed at Jane Street

4.4★
Jul 23, 2012

Robot wakes up every morning and does one of the following things with equal (1/4) probability: 1) self-destroys; 2) does nothing; 3) clones himself (so you have 2 robots); 4) clones himself two times (so you have 3 robots). If you have one robot at the start of the first day, what is the probability that, eventually, you will have no robots?

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