Quantitative Research Internship Interview Questions

4,854 quantitative research internship interview questions shared by candidates

A question was like: roll a die until you obtain either a 5 or a 6. If receive a 5 then cash out the sum of all of previous rolls but excluding the 5. If receive a 6, then no payout. Cash out mid-game for the sum is allowed. How to maximize expected payoff.
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Quantitative Trader

Interviewed at Optiver

3.8
Oct 13, 2025

A question was like: roll a die until you obtain either a 5 or a 6. If receive a 5 then cash out the sum of all of previous rolls but excluding the 5. If receive a 6, then no payout. Cash out mid-game for the sum is allowed. How to maximize expected payoff.

The most important question was a mental math problem under strict time pressure, such as: “What is 73 × 87?” — without using a calculator. They really wanted to see how quickly and accurately you could think under pressure, which makes sense given the nature of the role. In addition to that, there were logic puzzles and probability questions, like: “What is the probability of drawing exactly two aces from a shuffled deck of cards?”
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Quantitative Analyst

Interviewed at Optiver

3.8
Jul 9, 2025

The most important question was a mental math problem under strict time pressure, such as: “What is 73 × 87?” — without using a calculator. They really wanted to see how quickly and accurately you could think under pressure, which makes sense given the nature of the role. In addition to that, there were logic puzzles and probability questions, like: “What is the probability of drawing exactly two aces from a shuffled deck of cards?”

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