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Quantitative Researcher Intern Interview Questions

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4,870 quantitative researcher intern interview questions shared by candidates

Person A has a 20-sided dice and person B has three 6-sided dice. They both roll their dice and whoever gets a bigger number/sum of numbers wins the game. Is it a fair game? Same game with one more player C who has a 20-sided dice. Is this new game fair? (all dice are fair; a 20-sided dice has number 1,2,…, 20 on each of its 20 sides)
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Assistant Quantitative Researcher

Interviewed at Jane Street

4.4★
Nov 21, 2017

Person A has a 20-sided dice and person B has three 6-sided dice. They both roll their dice and whoever gets a bigger number/sum of numbers wins the game. Is it a fair game? Same game with one more player C who has a 20-sided dice. Is this new game fair? (all dice are fair; a 20-sided dice has number 1,2,…, 20 on each of its 20 sides)

Given 3 black and 2 white balls in a bag, you can take several balls and stop when you want to. How should you determine when to stop in order to maximize expectation of b-w. This part is easy, Then some generalization of it which is really hard.
avatar

Quantitative Researcher

Interviewed at Jane Street

4.4★
Apr 8, 2022

Given 3 black and 2 white balls in a bag, you can take several balls and stop when you want to. How should you determine when to stop in order to maximize expectation of b-w. This part is easy, Then some generalization of it which is really hard.

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