Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1 [but the door is not opened], and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice?
Monty Hall | Monte Halperin, OC, OM (born August 25, 1921), better known by the stage name Monty Hall, is a Canadian-born MC, producer, actor, singer and sportscaster, best known as host of the television game show Let's Make a Deal.