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61,148 summer internship interview questions shared by candidates

• Is 1027 a prime number? • How would you write an algorithm that identifies prime numbers? • 2 blue and 2 red balls, in a box, no replacing. Guess the color of the ball, you receive a dollar if you are correct. What is the dollar amount you would pay to play this game?
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Summer Intern

Interviewed at Five Rings

3.8★
Apr 25, 2012

• Is 1027 a prime number? • How would you write an algorithm that identifies prime numbers? • 2 blue and 2 red balls, in a box, no replacing. Guess the color of the ball, you receive a dollar if you are correct. What is the dollar amount you would pay to play this game?

Suppose that you have a fair coin. You start with $0. You win 1$ each time you get a head and loose $1 each time you get tails. Calculate the probability of getting $2 without getting below $0 at any time.
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Summer Internship - Quantitative Investment Strategies

Interviewed at Goldman Sachs

3.7★
Apr 11, 2012

Suppose that you have a fair coin. You start with $0. You win 1$ each time you get a head and loose $1 each time you get tails. Calculate the probability of getting $2 without getting below $0 at any time.

There are 9 identical looking balls, but one ball is slightly heavier than the others. If you have one scale, what is the least number of measurements one would need to identify for sure, which ball is the heavier one?
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Summer Explore Microsoft Program

Interviewed at Microsoft

4★
Apr 17, 2012

There are 9 identical looking balls, but one ball is slightly heavier than the others. If you have one scale, what is the least number of measurements one would need to identify for sure, which ball is the heavier one?

I have a 12 sided die and you have a 20 sided die. We each get two rolls and we can each chose to stop rolling on either one of the rolls, taking the number on that roll. Whoever has the higher number wins, with the tie going to the person with the 12 sided die. What is the probability that the person with the 20 sided die wins this game?
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Summer Intern

Interviewed at Jane Street

4.4★
Feb 16, 2014

I have a 12 sided die and you have a 20 sided die. We each get two rolls and we can each chose to stop rolling on either one of the rolls, taking the number on that roll. Whoever has the higher number wins, with the tie going to the person with the 12 sided die. What is the probability that the person with the 20 sided die wins this game?

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