The Monty Hall Problem

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!

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  Howto & Style

[niansenx]

No. This doesn't apply to Deal or No Deal because in that game, the host doesn't know where the top prize is. It is because you are guaranteed to have a non-prize door eliminated from this game that the strategy of swapping works.

[Luke Latham]

The real problem occurs when you try to drive the car through the door.

[Mike Ives]

i tested this with yathzee cups and 2 green eggs and one pink egg and it worked!

[Nick Doherty]

i hate your profile picture

[Käptn Kook]

hammer!

[Joe Dooley]

it never said the car worked, in that case you would want the goat for cheese cuz cheese is epic

[Revexz]

Because you did your choice before he revealed the door. So as you said a 66% chance to pick a goat. The odds of you picking a goat after he opened the door did never change since you picked the door before it got revealed. So statistically 2 out of 3 times you picked a goat hence why swapping gives you a greater chance to pick the car even after the reveal.

[Dat Nguyen]

no it makes no difference.....a car can´t fit through a door...xD

[daflame297]

Who cares I want the goat

[Jacqueline O'Brien]

it sort of does make sense but in some ways it doesn't