I read this in the book
The Curious Incident of the Dog in the Night-Time
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, 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?
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yes.
ReplyDeleteorginally, 1/3 chance of getting car.
host reveals D3 as a goat.
now, 2/3 chance of getting car if i switch doors.
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