The Monty Hall Problem is a famous (or rather infamous) probability
puzzle. Ron Clarke takes you through the puzzle and explains the
counter-intuitive answer.
You can read more about this problem, and the controversy, on Marilyn Vos Savant's website www.marilynvossavant.com
A lot of people have commented that I should have used 67% rather than 66%. When I made the video I made the choice to use 66% because I talk about "double the chance" and 66% is double 33%. I accept that 67% is more accurate, but I don't think it affects the explanation. Thanks for all your comments!
![](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_tj50YwJcbLWAR-dlOXYhfFkEUHherkPMh6eqbrICkSniSc88S6M3PcEqezPzC4ehMZYDkuMnSd3-cEAsN5v3-_ukuzFht3zDws2QP-p2uK74A=s0-d)
You can read more about this problem, and the controversy, on Marilyn Vos Savant's website www.marilynvossavant.com
A lot of people have commented that I should have used 67% rather than 66%. When I made the video I made the choice to use 66% because I talk about "double the chance" and 66% is double 33%. I accept that 67% is more accurate, but I don't think it affects the explanation. Thanks for all your comments!