Junior Trader Analyst Interview Questions

9,706 junior trader analyst interview questions shared by candidates

Given a black box that spits out random numbers from 0 through 1 (probability distribution can be random) such that events are independent and the probability of drawing any one number is 0, simulate a coin flip (with EXACTLY 50% heads, 50% tails).
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Assistant Trader

Interviewed at Jane Street

4.4
Feb 4, 2014

Given a black box that spits out random numbers from 0 through 1 (probability distribution can be random) such that events are independent and the probability of drawing any one number is 0, simulate a coin flip (with EXACTLY 50% heads, 50% tails).

Suppose I have two pancakes, one with two burnt sides, one with one burnt and one unburnt side. I choose one of these pancakes randomly, and then look at one of its sides, chosen at random. It is burnt. What is the probability that I chose the pancake with two burnt sides?
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Trader Intern

Interviewed at Citadel

3.9
Oct 25, 2019

Suppose I have two pancakes, one with two burnt sides, one with one burnt and one unburnt side. I choose one of these pancakes randomly, and then look at one of its sides, chosen at random. It is burnt. What is the probability that I chose the pancake with two burnt sides?

You are 2 points down in a basketball match....if you shoot for a 2 pointer you have a 33 percent chance of scoring and the game goes to overtime. If you shoot for 3 you have a 25 percent chance of scoring ....if the game goes to overtime you have a 50 percent chance of winning....which shot should you go for?
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Assistant Trader

Interviewed at Susquehanna International Group

3.8
Jan 10, 2012

You are 2 points down in a basketball match....if you shoot for a 2 pointer you have a 33 percent chance of scoring and the game goes to overtime. If you shoot for 3 you have a 25 percent chance of scoring ....if the game goes to overtime you have a 50 percent chance of winning....which shot should you go for?

-If the radius of a sphere is expanding at a rate of 4 metres/second, and the starting radius is 0.25 metres, what is the volume of the sphere after 2 1/2 minutes? -if the mean of X=4 and the variance of X is 9, and the mean of Y=5 and the variance of Y is 16, what is the standard deviation of X + Y given a relationship of -3/8 (x to y)? - there are 3 faucets. Faucet #1 can fill a sink in 20 min, F#2 can fill a sink in 12 min, and F#3 can fill a sink in 5 min. If all 3 faucets are running at the same time, how long will it take for the sink to fill?
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Junior Trader

Interviewed at TransMarket Group

4.1
Feb 12, 2014

-If the radius of a sphere is expanding at a rate of 4 metres/second, and the starting radius is 0.25 metres, what is the volume of the sphere after 2 1/2 minutes? -if the mean of X=4 and the variance of X is 9, and the mean of Y=5 and the variance of Y is 16, what is the standard deviation of X + Y given a relationship of -3/8 (x to y)? - there are 3 faucets. Faucet #1 can fill a sink in 20 min, F#2 can fill a sink in 12 min, and F#3 can fill a sink in 5 min. If all 3 faucets are running at the same time, how long will it take for the sink to fill?

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