The best riddles. Anywhere.

Probability Riddles

Probability riddles can be especially difficult because the human mind isn't accustomed to thinking about chance and probability from a mathematical perspective. However, once you solve a few of them, your intuitions will improve and you'll be ready for almost any riddle that comes at you.

Medium

You are on a gameshow and the host shows you three doors. Behind one door ...
You have a basket of infinite size (meaning it can hold an infinite number of ...
What is the least number of people that need to be in a room such ...
Your enemy challenges you to play Russian Roulette with a 6-cylinder pistol (meaning it has ...
Your friend shows you two jars, one with 100 red marbles in it, the other ...

Hard

You and a friend are standing in front of two houses. In each house lives ...