It's the Monty Hall problem! Behind one of these 3 doors is a car. Guess right, and it's yours. Choose carefully...
Using the ask/answer made me think of text based games and scenarios, like the bridge keeper from Monty Python and the Holy Grail, or Hide the Wumpus. With yesterdays random prompt still on my mind I picked the Monty Hall problem. It's an unintuitive application of probability, where swapping doors after a llama is revealed gives you a 2/3 chance of winning the car!
