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Math Help - [SOLVED] Probability Question. (please help)

  1. #1
    donny brasco
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    [SOLVED] Probability Question. (please help)

    Maria selected two M&M candies at random from a bowl containing three M&Ms,one red, one yellow, and one orange.

    1. List a possible combinations.

    2.Suppose Maria draws the first M&M, likes it, and eats it before drawing the second M&M. List all possible combinations now.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by donny brasco View Post
    Maria selected two M&M candies at random from a bowl containing three M&Ms,one red, one yellow, and one orange.

    1. List a possible combinations.
    This is all possible pairs of M&M's so: (r,y) (r,o) (y,o), there are only these three
    possibilities, as order seems not to be significant in this question.

    (If it were there would be six posibilities: (r,y) (r,o) (y,o), (y,r), (o,r), (r,y))

    2.Suppose Maria draws the first M&M, likes it, and eats it before drawing the second M&M. List all possible combinations now.
    Poor wording, I for one don't know what this is asking.

    RonL
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  3. #3
    sri
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    Maria can pick two M&Ms out of the 3 in the bowl in 3 ways.
    (r,o),(y,o),(r,y). Here, order is not important.

    If she eats the first one, then she will only have 2 M&Ms in the bowl to choose from. She can choose her second one from these in 2 ways. Here order becomes important and there are 6 different possible combinations.

    If the first M&M is red,
    (r,y), (r,o)

    If the first M&M is orange,
    (o,r), (o,y)

    If the first M&M is yellow,
    (y,r), (y,o)
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