Investment Banking & Asset Management interview questions

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Trader at Jane Street

Jan 19, 2011

“What is the expected value of the max of two dice”

“2. In an urn you have red and blue balls (same number of balls in each of the two colors). You extract 3 balls what is the probability that the number of balls you have extracted is odd. Now you...”

“What is the chance that at least two people were born on the same day of the week if there are 3 people in the room?”

Trader at Jane Street

Oct 5, 2011

“Apples cost 27 cents. How many apples can you purchase with $10? (And do this in under 1 minutes).”

“You have a bat and a ball. The bat is 1 dollar more than the ball and they both add up to 1.50. How much are each?”

“Another was a puzzle: A king orders 100 bottles of wine for a celebration. A courtier who's angry with the king over something puts poison in one of those bottles. The king has a way of identifying...”

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“How many digits are there in 2^50?”

“Given 1000 bottles of wine, 1 has poison, how many rats would it take to find the poison if you only get one timestep. I.E. You can only run your experiment once and check the rats once.”

“V~U[0,1]. Make a bet B, for V, and will be awarded 1,5 times V if B>V, otherwise your bet is worthless - you do not lose anything as well. What is your bet?”

“You are playing a game in which four fair coins are flipped and the amount of money you receive in dollars is equal to the number of heads that appear in total. If you do not like the outcome of the...”

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