given a six-sided die, what's the expected value of the difference between two die rolls?
Trainee Trader Interview Questions
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choose a subset from 1-30 that has the largest sum and the elements in this subset do not have common factors.
You flip four coins. At least two are tails. What is the probability that exactly three are tails? Do this in your head, you are not allowed to write anything down for this question.
Let's say you have 2 regular 6-faced dice. When you throw them down, you know the sum distribution (can vary from 2 to 12). Now let's say you were to erase the numbers on the faces of both the dice, and rewrite them with a new set of positive integers. Can you replicate the same sum distribution? If yes, how?
chance of drawing two cards from the top of the deck that turns out to be the same number
73 - 227? What's the probability that it rains on at least one of Saturday or Sunday if Saturday has a 60% chance of rain and Sunday has a 70% chance of rain? You have 2 fairly weighted dice. You and an opponent pick any integer one after the other. If your number is closer to the sum of the faces on the rolled dice, you win. Do you want to go first and what number do you choose? What's the probability of winning? You have 27 cubes with all faces painted white. You put them together into a 3x3x3 cube and paint the exterior blue. After breaking it back up, you pick a cube and put it on the table and the five visible faces are all white. What's the probability the non visible face is blue?
Assign A=1,...,Z=26. Find an 8 letter word whose sum is less than 50.
You are standing beside a road watching cars pass by. The probability that you see a car pass by in 1 minute is 1/4. What is the probability that you see a car pass by in 30 seconds?
10 lightbulbs in a row, on or off, no two adjacent lightbulbs can be on. how many combinations can we have? you may use a piece of paper
What is the square root of .01?
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