Quantitative Research Analyst Interview Questions

3,500 quantitative research analyst interview questions shared by candidates

You have r red balls, w white balls in a bag. If you keep drawing balls out of the bag until the bag now only contains balls of a single color (ie you run out of a color) what is the probability you run out of white balls first? (in terms of r and w).
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Quantitative Researcher

Interviewed at Citadel

4
Dec 4, 2018

You have r red balls, w white balls in a bag. If you keep drawing balls out of the bag until the bag now only contains balls of a single color (ie you run out of a color) what is the probability you run out of white balls first? (in terms of r and w).

Discrete math question, coins in a bag, basic prob/stat questions. For example, if there are 2 coins in a bag, one biased, the other fair, and you pick a coin at random and flip it 6 times and it came up heads every time, what is the probability you picked the biased coin
avatar

Quantitative Researcher

Interviewed at Susquehanna International Group

3.8
Nov 21, 2019

Discrete math question, coins in a bag, basic prob/stat questions. For example, if there are 2 coins in a bag, one biased, the other fair, and you pick a coin at random and flip it 6 times and it came up heads every time, what is the probability you picked the biased coin

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