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 is a suitcase with $1 ...


You have a basket of infinite size (meaning it can hold an infinite number of objects). You also ...


What is the least number of people that need to be in a room such that there is greater than a 50% ...


Your enemy challenges you to play Russian Roulette with a 6cylinder pistol (meaning it has room ...


Your friend shows you two jars, one with 100 red marbles in it, the other with 100 blue marbles in ...


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