Assistant Trader Interview Questions

578 assistant trader interview questions shared by candidates

A seller is selling you a car whose value is uniformly distributed between 0 and 1000 but you don’t know the real value and you need to bid for the car. If your bid price is higher than the its real value, the deal will be done at your bid price and you can afterwards resell the car elsewhere for 1.5 times its real value. Otherwise, the deal will not be done. You can only bid once. What will be your optimal bid price?
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Assistant Trader

Interviewed at Jane Street

4.4
Feb 16, 2014

A seller is selling you a car whose value is uniformly distributed between 0 and 1000 but you don’t know the real value and you need to bid for the car. If your bid price is higher than the its real value, the deal will be done at your bid price and you can afterwards resell the car elsewhere for 1.5 times its real value. Otherwise, the deal will not be done. You can only bid once. What will be your optimal bid price?

There exists a six-sided die. The die is rolled. You are paid $x if the die shows x dots (e.g. if you roll 3, then you are paid $3). What is a fair price for this game? Additional layer: after rolling the die once, you have the option of taking the rolled amount or rolling again. However, if you roll again, then you must take the amount corresponding to the second roll. What is a fair price for this game?
avatar

Assistant Trader

Interviewed at Jane Street

4.4
Mar 9, 2010

There exists a six-sided die. The die is rolled. You are paid $x if the die shows x dots (e.g. if you roll 3, then you are paid $3). What is a fair price for this game? Additional layer: after rolling the die once, you have the option of taking the rolled amount or rolling again. However, if you roll again, then you must take the amount corresponding to the second roll. What is a fair price for this game?

I have 100 coins, 99 that are heads/tails and one that is double sided heads. If I pick one of the coins at random, flip it seven times, and get 7 heads in a row, is the coin more likely to be double sided heads or a regular heads/tails coin.
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Assistant Trader

Interviewed at Belvedere Trading

4.2
Apr 21, 2010

I have 100 coins, 99 that are heads/tails and one that is double sided heads. If I pick one of the coins at random, flip it seven times, and get 7 heads in a row, is the coin more likely to be double sided heads or a regular heads/tails coin.

We are playing a game where the first person to say "40" wins, and each player must add 1-10 to the previous number. For example, I say 5; you can say any number 6-15 to which I have to react. For you to say "40" first, what is your strategy? Hint: You need to choose whether or not to go first, then your strategy going forward.
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Assistant Trader

Interviewed at Susquehanna International Group

3.8
Oct 12, 2011

We are playing a game where the first person to say "40" wins, and each player must add 1-10 to the previous number. For example, I say 5; you can say any number 6-15 to which I have to react. For you to say "40" first, what is your strategy? Hint: You need to choose whether or not to go first, then your strategy going forward.

Play a game with an urn. 75 blue balls. 25 red balls. 1 yellow ball. you get a dollar for every red and if you select the yellow you lose everything. what should be your strategy in the game. you can choose to stop or re-draw after every ball.
avatar

Assistant Trader

Interviewed at Jane Street

4.4
Feb 27, 2013

Play a game with an urn. 75 blue balls. 25 red balls. 1 yellow ball. you get a dollar for every red and if you select the yellow you lose everything. what should be your strategy in the game. you can choose to stop or re-draw after every ball.

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