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28 August, 13:36

A number cube is rolled two times. What is the probability that the sum of two numbers will be 9?

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  1. 28 August, 16:32
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    Total number of possible outcomes = 36

    Total number of outcomes with sum 9 = 4

    {3, 6} (4, 5) {5, 4} (6, 3}

    P (Sum = 9) = 4/36 = 1/9

    Answer: 1/9
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