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Thread: 3 Boxes Problem

  1. #21
    . ☆ ☆ ☆ . gidget's Avatar
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    but what if you would have originally choosen an empty box?
    the game host prolly wouldn't have opened an empty box to pressure you to change to the winning box...

    ..

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  3. #22
    40lb box of rape ROB64's Avatar
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    Quote Originally Posted by LevesqueIsKing View Post
    EDIT: That was a really interesting explanation, Napalm. That you want to originally pick a bad box so that you can switch to the good.
    Yep, it was. That's what explained it for me, there's a 66.6666666% chance that you would pick an empty box, so you're chances are better if you switch, because it's more likely that you chose a box with nothing in it.

  4. #23
    Senior Member Napalmbrain's Avatar
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    Quote Originally Posted by gidget View Post
    but what if you would have originally choosen an empty box?
    the game host prolly wouldn't have opened an empty box to pressure you to change to the winning box...
    The problem is based on the fact that the host always opens an empty box. It wouldn't work if he didn't.



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    @ROB64 - The longer you spend on this forum, the more you realise that Napalmbrain knows a lot about everything.


  5. #24
    Shmunior Member Chewy's Avatar
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    Took me a little while to get this but it actually makes a lot of sense if you think about it...

    You're basically betting on the fact that you guessed wrong in the first place, which is a 2/3 chance.
    You want to sit down but you sold your chair.
    So you just stand there.

    Xbox Live Gamertag: RizGiz

  6. #25
    Super Ninjarator Foxy's Avatar
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    Quote Originally Posted by Lewi T View Post
    You are playing a game. A person (game host) shows you 3 boxes. 1 box contains 100, 2 others are empty. You need to choose one of the boxes. If the box you chosen contains the money you win.

    Suppose you make a guess and point at some box. The game host instead of opening the box you just pointed at opens one of the other boxes and shows you that that box is empty. Then he asks "I'm going to give you a last chance to change your decision". So you can either stand by your original choice and point at the same box or choose the other one. What gives you better chances? (i.e. what are the chances you win if you choose the box you originally selected vs. the other box?)
    Bloody Monty Hall, my maths teaches freaking loves it. Gets so giddy when talking about it.

  7. #26
    Not at the table Carlos Barris1024's Avatar
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    wow this thread is amazing. The dude who created this, you are now my hero
    That's so cool how it actually works. Now i need to remember this in case i'm ever on the price is right.
    great thread, very interesting
    Yeah bro, not funny.

  8. #27
    WiiChat Member Lewi T's Avatar
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    Quote Originally Posted by Barris1024 View Post
    wow this thread is amazing. The dude who created this, you are now my hero
    That's so cool how it actually works. Now i need to remember this in case i'm ever on the price is right.
    great thread, very interesting

  9. #28
    Freestyler Brownies14's Avatar
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    Quote Originally Posted by Brawny View Post
    Haha, morons.

    edit: Think of it as two sides. There's your side, and the host side. When you choose one, the chance of having the hundred pounds in your side is 33% and his side is 66%. When he opens one of his and shows that it's empty and asks if you want to switch, you say yes, because his side still has a 66% chance of being the good box.

    Edit: In case the first line seemed too offensive, know that I thought this at first as well.

    I got nothing...


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