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Jane Street Interview Question

Jane StreetIntern Interview

1) 12% of 47 2) If I pick 2 cards from a shuffled deck (with no jokers) what is the probability that they are both a queen? 3) i) If I toss 4 fair coins, I get a dollar for every head, what is the value of this game? ii) If I have the option to re-toss all 4 coins and must take the value of the second rounds result, what is the value of the game now? 4) How confident are you that you got 0,1,2,3 or all questions correct, giving percentages 5) If two teams play a best 4 of 7 series and have 50% chance of winning each round, what is the probability that they will play to the 7th round?

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