Trader Interview Questions

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There is a hat containing 100 one-dollar bills, 10 ten-dollar bills, and 1 one-hundred-dollar bill. You draw bills one by one at random without replacement. At any moment, you may choose to say "stop"—either right from the start or immediately after seeing the last drawn bill. Once you say stop, the next bill drawn will be yours. Question: What is the optimal strategy? And how much would you be willing to pay to play this game?

Quant Trader

Interviewed at Wincent Capital Management

4.2
Sep 24, 2025

There is a hat containing 100 one-dollar bills, 10 ten-dollar bills, and 1 one-hundred-dollar bill. You draw bills one by one at random without replacement. At any moment, you may choose to say "stop"—either right from the start or immediately after seeing the last drawn bill. Once you say stop, the next bill drawn will be yours. Question: What is the optimal strategy? And how much would you be willing to pay to play this game?

first question was probability about a sub and two torpedoes with 1/3 probability of hitting target - what is probability that at least one of the torpedoes will hit the target. the second question was a pretty easy logic and strategy question the details of which I cannot recall.
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Assistant Trader

Interviewed at Susquehanna International Group

3.8
Sep 29, 2013

first question was probability about a sub and two torpedoes with 1/3 probability of hitting target - what is probability that at least one of the torpedoes will hit the target. the second question was a pretty easy logic and strategy question the details of which I cannot recall.

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