The Monty Hall Three Door Puzzle
11296
The Monty Hall problem
38074
Winning strategies in multidimensional tic-tac-toe
4505
Number of students in school club : $4$ Circles Venn Diagram Puzzle
104309
Pigeon-Hole Principle Common Sum
94388
SAT Probability and Counting
15349
Combinatorics riddle: keys and a safe
141927
In the card game "Projective Set": Compute the probability that $n$ cards contain a set
111042
A geometry problem from high school Olympiad selection round
4592
Prison problem: locking or unlocking every $n$th door for $ n=1,2,3,...$
45365
How to solve this probability problem analytically (instead of using simulation)? Probability of Bill wins the game if he goes first
156248
Monty Hall Problem confusion
41205
Help me solve a combinatorial problem
78148
Why does the infinite prisoners and hats puzzle require the axiom of choice?
94295
Pigeonhole-principle with two choices
125124
Random solving of a Rubik cube .
84721
Probability combinatorics deck of cards
73069
A riddle (in C)