Quantitative Trader Interview Questions

1,130 quantitative trader interview questions shared by candidates

50% of population does not smoke, 20% are heavy smokers and 30% are light smokers. If heavy smokers are twice as likely to die as light smokers, and light smokers are twice as likely to die as non-smokers then what is the likelihood that if someone died they were a heavy smoker?
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Quantitative Trader Assistant

Interviewed at Susquehanna International Group

3.8
Mar 19, 2014

50% of population does not smoke, 20% are heavy smokers and 30% are light smokers. If heavy smokers are twice as likely to die as light smokers, and light smokers are twice as likely to die as non-smokers then what is the likelihood that if someone died they were a heavy smoker?

You have all the clubs from a deck, 13 cards, and you can choose 2 from the deck and get paid their product, where all face cards are considered to be 0. You can pay $1 to reveal the difference of any two cards you choose, how much would you pay to play this game?
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Quantitative Trader

Interviewed at Jane Street

4.4
Jan 15, 2018

You have all the clubs from a deck, 13 cards, and you can choose 2 from the deck and get paid their product, where all face cards are considered to be 0. You can pay $1 to reveal the difference of any two cards you choose, how much would you pay to play this game?

We have two candles. The one burns in 2 hours the other burns in 1 hour (I am not sure about the numbers). At which time should we burn simultaneously these candles in order the one candle to have double the length of the other at 4pm?
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Quantitative Trader Intern

Interviewed at TransMarket Group

4.1
Apr 17, 2017

We have two candles. The one burns in 2 hours the other burns in 1 hour (I am not sure about the numbers). At which time should we burn simultaneously these candles in order the one candle to have double the length of the other at 4pm?

Given a fair die 1-6, what would be the expected value of the result? What if you have two chances? After the first row, you can choose whether or not you want to keep it. What would be the maximum expected value based on the best strategy.
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Quantitative Trader

Interviewed at Jane Street

4.4
Oct 10, 2015

Given a fair die 1-6, what would be the expected value of the result? What if you have two chances? After the first row, you can choose whether or not you want to keep it. What would be the maximum expected value based on the best strategy.

You have a drawer with an infinite number of two colors of socks, which exist in equal probability. What is the expected number of attempts at taking out socks individually from the drawer before a matching pair is found?
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Quantitative Trader Intern

Interviewed at Jane Street

4.4
Sep 18, 2019

You have a drawer with an infinite number of two colors of socks, which exist in equal probability. What is the expected number of attempts at taking out socks individually from the drawer before a matching pair is found?

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