There are 6 red, 2green 3 yellow and 4 orange balls in the box. What is the probability to pick 2 balls that are either green or yellow?
Junior Trader Interview Questions
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Roll an n-sided die. You can get paid the outcome or pay 1/n dollars to re-roll. how much would you pay to play, and how much would you sell the game for? (rough numbers). five minutes for complete answer.
Apples cost 27 cents. How many apples can you purchase with $10? (And do this in under 1 minutes).
You have a 3x3x3 cube painted yellow on the outside. The cube is then split up into 1x1x1 cubes. You pick one of these cubes at random and notice that the side you are looking at is painted. Without knowing if any of the other sides are painted, what is the probability that this was a corner cube?
given a six-sided die, what's the expected value of the difference between two die rolls?
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?
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