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math

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A six sided die is rolled three times. List possible outcomes and find the probability of rolling exactly one 6.

  • math -

    Are you sure that they want you to "list" all the outcomes?
    There are 216 of them. (6x6x6=216)

    If you have to list them, do it systematically, e.g.
    1 1 6
    1 1 5
    ...
    1 1 1
    1 2 6
    1 2 5
    ....
    1 2 1
    1 3 6
    .....
    ....
    1 6 1
    ...
    2 1 6
    2 1 5
    etc

    To have only one 6, it must look like this
    6 x y, x 6 y, x y 6, where the x and y are NOT 6
    number of those = 3x5x5 = 75

    prob (exactly one 6) = 75/216 = 25/72

  • math -

    brah that worng

  • math -

    help me pls

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