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The Monty Hall Problem

niansenx niansenx·8 videos
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Uploaded on Jan 21, 2007

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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Top Comments

  • 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.

    · 9

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    in reply to xxjman1217xx (Show the comment)
  • Luke Latham

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

    · 8

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All Comments (11,896)

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  • Mike Ives

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

    ·

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  • Nick Doherty

    i hate your profile picture

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    in reply to xxjman1217xx (Show the comment)
  • Käptn Kook

    hammer!

    ·

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  • Joe Dooley

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

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  • 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.

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    in reply to Flickityflicks (Show the comment)
  • Dat Nguyen

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

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  • daflame297

    Who cares I want the goat

    · 2

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  • Jacqueline O'Brien

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

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