Tuesday, June 17, 2008

Monty Hall problem

From Wikipedia,

"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?

The answer is.
you can double the chance by switching your choice to No.2.


mihai said...


that's so smart... it took me a minute to figure it out :P

Koichi Tamura said...

I didn't need one minute.
When my brother asked me the question, I answered instantly, "Same"