The only difficult question I was asked went as follows: "You and your opponent flip a coin. If the first player gets heads, the second player pays him $30. If he flips tails, the coin goes to the second player. If the second player flips heads, he wins $30 from the first player. How much should you pay to go first?"
Two people painting a house, one on his own takes 1hr and the other takes 2hrs, how long does it take for both to paint the house. After my answer he asked how confident I was then said that I could bet on my answers, £1 if I got it right, -£1000 if I got it wrong - should I take the bet.
100 coins in a circle, clockwise labeled 1-100. Starting at coin 1, you flip each one moving clockwise. If a coin lands tails, you keep it, if it lands heads, you remove it. After a long time, only one coin will remain. What would you expect its label is?
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
Viewing 21 - 30 interview questions