There are 36 cards labeled with the numbers 1 through 36 and then placed face down on a table. If four cards are revealed one after the other, what is the probability that each card’s number is larger ...

This past week's puzzle, as presented: Ping pong (or table tennis) is a game of both odds and luck. Most games I have seen have been rather one sided — it is really rare that two players are really at ...

From the Wikipedia page devoted to the “Monty Hall problem“: Suppose you’re on a game show like “Let’s Make a Deal,” and you’re given the choice of three doors: Behind one door is a new car; behind ...

Control is filled with plenty of mind-bending visuals and equally trippy puzzles, and hidden behind a Level 5 security door in the Luck & Probability department of the Research sector is an experiment ...