Which Door to Open?
Well, lets say you’re a lucky contestant in the final round of a game show that gives you the chance of winning a brand new sports car. All you need to do is to pick the right door out of 3 doors, and if the car appears behind the door that you have chosen, you would win. Sounds simple?
Here’s the actual situation:
Suppose the 3 doors are labelled A, B and C. The showhost will ask you to choose a certain door. You name the door of your choice (e.g. A), and the host will open one of the other two doors instead (e.g. C) to show you that there’s no car behind that opened door. He then asks you if you would like to change your mind and select the other unopened door (e.g. B) instead.
Will you change your choice? Which door has a higher probability of having a car behind, or both have the same probability?
same prob la! hahahah
Comment by yihan — October 18, 2007 @ 2:38 pm