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  1. #7
    Shake it like a polaroid picture Switch doors or not? RagnaToad's Avatar
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    It certainly does hold up mathematically speaking. Think of it like this:
    You choose a door and have 1/3 chance that it's the car. Meaning that when you switch later one, you have a 1/3 chance to switch from the car to a goat.That means you have the rest of the 3/3 -> 2/3 to switch to the car.

    Or with a simple [Number of favourable possibilities] divided by [Total number of possibilities] for switching:

    Car -> switching means Goat
    Goat A -> switching automatically means Car (other goat is eliminated)
    Goat B -> switching automatically means Car (other goat is eliminated)

    2 out of 3 results of switching get you the car.

    NOTE: Eliminating 1 door BEFORE choosing would obviously alter chances from 1/3 to 1/2 of choosing the right one (assuming you want the car ).
    Last edited by RagnaToad; 06-09-2009 at 06:32 AM.
    Crao Porr Cock8: Getting it while the getting's good


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