Interview Questions & Reviews

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“Rate yourself on a scale of 1 to 10 how weird you are.”

Intern at Jane Street

Mar 14, 2011

“If you had only 5 and 11 cent stamps. Whats the smallest number that would be impossible to make with those stamps.”

1 of 1 found helpful

“How to measure 9 minutes using only a 4 minute and 7 minute hourglass”

“Here is an example of a brainteaser during the interview: You have five pirates, ranked from 5 to 1 in descending order. The top pirate has the right to propose how 100 gold coins should be divided…”

Trader at Jane Street

May 2, 2012

“What is the sum of the digits of all the numbers from 1 to 1000000? This is different from the sum of the numbers. For instance the sum of the numbers from 1 to 10 is 55 whereas the sum of the digits…”

“what is the expected number of flips of a coin to simulate a 6 sided die.”

“During the third interview : imagine an infinite chess board. If the horse from 1 case, in how many cases can he possibly ends after 10 moves. You actually don't have to give a number but a…”

“Flip a coin until either HHT or HTT appears. Is one more likely to appear first? If so, which one and with what probability?”

“I got a few C++ questions, then a question on sorting algorithms then a brainteaser. The brainteaser went as follows: Three people are given hats. Each hat is either red or blue, chosen at random…”

“Russian Roulette - 4 blanks 2 bullets, all in a row. If someone shoots a blank next to you, would you take another shot or spin”

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