Interns Interview Questions

248,183 interns interview questions shared by candidates

“Imagine that you have three boxes, one containing two black marbles, one containing two white marbles, and the third, one black marble and one white marble. The boxes were labeled for their contents - BB, WW, BW - but someone has switched the labels so that every box is now incorrectly labeled. You are allowed to take one marble at a time out of any box, without looking inside, and by this process of sampling you are to determine the contents of all three boxes. What is the smallest number of drawings needed to do this?”
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Web Technology Intern

Interviewed at Riot Games

3.9
Apr 26, 2014

“Imagine that you have three boxes, one containing two black marbles, one containing two white marbles, and the third, one black marble and one white marble. The boxes were labeled for their contents - BB, WW, BW - but someone has switched the labels so that every box is now incorrectly labeled. You are allowed to take one marble at a time out of any box, without looking inside, and by this process of sampling you are to determine the contents of all three boxes. What is the smallest number of drawings needed to do this?”

a) expected value of a die b) suppose you play a game where you get a dollar amount equivalent to the number of dots that show up on the die. you roll it once. if you don't like it, you get to roll it again, but you have to keep the 2nd roll. what's the fair value of this game? c) same as b), except now you get to reroll twice.
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Intern

Interviewed at Jane Street

4.4
Dec 24, 2009

a) expected value of a die b) suppose you play a game where you get a dollar amount equivalent to the number of dots that show up on the die. you roll it once. if you don't like it, you get to roll it again, but you have to keep the 2nd roll. what's the fair value of this game? c) same as b), except now you get to reroll twice.

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