What is the covariance of x-y and x+y, given that x and y are IID.
Assistant Trader Interview Questions
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We have two candles. The one burns in 2 hours the other burns in 1 hour (I am not sure about the numbers). At which time should we burn simultaneously these candles in order the one candle to have double the length of the other at 4pm?
Compute the expected value of the median of rolling the dice three times
The first player chose an integer between 1-30. The second player picks a different one. After that, a random integer (x) between 1-30 will be generated. The player whose number is closer to x get paid x dollars.
You have all the clubs from a deck, 13 cards, and you can choose 2 from the deck and get paid their product, where all face cards are considered to be 0. You can pay $1 to reveal the difference of any two cards you choose, how much would you pay to play this game?
coin tosses, A wins if HTT, B wins if TTH, is this fair?
If you could ask one true or false question to all Americans and wanted to minimize the number of people who got it right, what would you ask?
2 mental math questions, two probability questions. (1) If you have 4 coins, you toss them, what the expectation value of get heads, not you have a chance to redraw four coins one more time, what is your expectation (2) Two team has equal win probability, What is the probability that they go to series 7.
let's assume you have a sequence of 36 integers consisting of just 1's and 0's (i.e. 01010101..., 10000100... ). Can you construct a sequence such that every subsequence of length 5 is unique? Let's assume that you start with 00000. How would you construct it? (For instance, if you start with 00000100001..., then it's not valid since you have two subsequences (00001, 00001) of length 5 that are identical).
What is 87 x 46?
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