Let's Make a Deal is a television game show that originated in the United States in 1963. Monty Hall served as its host for many years. A successful contestant is offered the choice of 3 doors - a car is the prize behind one of the doors. Behind the other two doors is a booby prize affectionally referred to as a zonk.

After the contestant chooses a door, the host opens one of the other two doors revealing a zonk. The contestant may now stay with his choice or switch to the other door. What should he do? Does it make any difference?

Play a few rounds and see what you think.

click on your choice

Most people (even some accomplished mathematicians) maintain that it doesn't matter whether you switch or not - it's a straight out 50% chance. Maybe your playing around suggested otherwise?

Press the 'go' button and the computer will play 1,000 games while you watch.