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Quantitativer Analyst Interview Questions

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10,158 quantitativer analyst interview questions shared by candidates

Given deck of cards A and deck of cards B, which deck would you rather choose from if you need to choose two cards of the same color on consecutive draws? Deck A is a normal 52 card deck, Deck B is a 26 card deck with 50% black and 50% red. What if we add deck C, which is a 26 card deck that comes from a random subset of deck A?
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Quantitative Researcher

Interviewed at Jane Street

4.4★
Oct 17, 2015

Given deck of cards A and deck of cards B, which deck would you rather choose from if you need to choose two cards of the same color on consecutive draws? Deck A is a normal 52 card deck, Deck B is a 26 card deck with 50% black and 50% red. What if we add deck C, which is a 26 card deck that comes from a random subset of deck A?

3. There are 30 blue and 30 red balls and two urns. You play a game. Your opponent has the right to arrange the balls in the two urns as he pleases, without telling you what he did. You then must draw a ball from an urn of your choice. You win $10 if you draw a blue ball, otherwise you get $0. How much would you be willing to pay to play this game?
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Quantitative Analyst

Interviewed at Jane Street

4.4★
Feb 1, 2011

3. There are 30 blue and 30 red balls and two urns. You play a game. Your opponent has the right to arrange the balls in the two urns as he pleases, without telling you what he did. You then must draw a ball from an urn of your choice. You win $10 if you draw a blue ball, otherwise you get $0. How much would you be willing to pay to play this game?

You have a standard deck of 52 cards. I draw a card and tell you I drew hearts. Now you draw a card from the cards that are remaining. What is the probability that you will also draw a heart? Again, you have a standard deck of 52 cards. I draw 13 cards and tell you I drew exactly 5 hearts. Now you draw 13 cards from the cards that are remaining. What is the expected number of hearts you will draw?
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Quantitative Trader

Interviewed at Jane Street

4.4★
Oct 12, 2016

You have a standard deck of 52 cards. I draw a card and tell you I drew hearts. Now you draw a card from the cards that are remaining. What is the probability that you will also draw a heart? Again, you have a standard deck of 52 cards. I draw 13 cards and tell you I drew exactly 5 hearts. Now you draw 13 cards from the cards that are remaining. What is the expected number of hearts you will draw?

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