Do you know behind #3 door is a goat?

Or only the game host knows that it is a goat?

If you already know #3 door is a goat, then your choice would only be #1 and #2 (a car and a goat), then the probability is the same 50%, so switching is no advantage.

所有跟帖： 

• only the host knows what's behind each door.... -荻花- ♀ (0 bytes) () 12/24/2008 postreply 07:51:11

• Then still no advantage to switch, 1/3 probability to get the ca -what_name_to_use- ♀ (0 bytes) () 12/24/2008 postreply 07:54:43