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9 December, 16:51

What is the probability of rolling a composite number with one roll of a die

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  1. 9 December, 17:25
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    Total number of possible outcomes (faces on the cube) = 6.

    The prime numbers are 2, 3, and 5.

    The composite numbers are 4 and 6.

    (I think '1' is not included in either category.)

    There are 2 composite numbers on the cube, out of 6 faces.

    So the probability of rolling one is

    2/6 = 1/3 = 33 and 1/3 %.
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