Another way to look at this as the chances of losing. The only way you lose by switching is if you picked the winning door in the first place. Since you had a 1/3 chance of picking the winning door, switching means you have a 1/3 chance of losing. And since 1 - 1/3 = 2/3, you have a 2/3 chance of winning by switching.

Link to old thread containing this subject: http://survivorsucks.yuku.com/reply/2372165/t/Riddles-for-OT.html#reply-2372165

Would you switch?

Last Edited By: Screerider 08/11/08 2:19 PM. Edited 1 times.