Quantitative Analyst Intern Interview Questions

10,159 quantitative analyst intern interview questions shared by candidates

a) The odds of having pizza on a Saturday are 60%, on Sunday, 30%. What are the odds of having pizza at least once during the weekend? b) How do the odds change if you are only allowed pizza on one of the two days? c) What about if you can only have pizza on Sunday if you had it on Saturday first?
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Quantitative Trader

Interviewed at Jane Street

4.4
Jun 18, 2018

a) The odds of having pizza on a Saturday are 60%, on Sunday, 30%. What are the odds of having pizza at least once during the weekend? b) How do the odds change if you are only allowed pizza on one of the two days? c) What about if you can only have pizza on Sunday if you had it on Saturday first?

Q: Suppose you want to calculate how long an escalator is. You have two times: the time it takes you to ascend the escalator while standing still, and the time it takes you to ascend the escalator while walking at a speed of x meters/second. Q: Some easy probability question on bounding the event of rain on a second day if it rained on the first. I'm sure there's someone else on here who gave a more detailed account. A follow-up required knowledge about union-bound if I recall correctly.
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Quantitative Research Intern

Interviewed at Jane Street

4.4
Nov 7, 2022

Q: Suppose you want to calculate how long an escalator is. You have two times: the time it takes you to ascend the escalator while standing still, and the time it takes you to ascend the escalator while walking at a speed of x meters/second. Q: Some easy probability question on bounding the event of rain on a second day if it rained on the first. I'm sure there's someone else on here who gave a more detailed account. A follow-up required knowledge about union-bound if I recall correctly.

Person A walks up an escalator at 2 steps/second. Person B walks up an escalator at 3 steps/second. Person B gets on the escalator 5 seconds after A and arrives at the top X seconds after A. (I forgot the exact value of X) If the escalator is moving at 1 step/second, how many steps are visible on the escalator at a single point in time?
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Quantitative Researcher

Interviewed at Jane Street

4.4
Dec 30, 2020

Person A walks up an escalator at 2 steps/second. Person B walks up an escalator at 3 steps/second. Person B gets on the escalator 5 seconds after A and arrives at the top X seconds after A. (I forgot the exact value of X) If the escalator is moving at 1 step/second, how many steps are visible on the escalator at a single point in time?

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