math

A pair of dice is rolled. Find the probability of rolling

​a) a sum not more than 1010​,
​b) a sum not less than 77​,
​c) a sum between 33 and 77 ​(exclusive).

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  1. Your question makes little sense.
    The sum on the two dice is between 2 and 12
    What's with all the weird numbers?

    ok,
    a) the prob of rolling a sum not more than 1010 = 1

    b) prob of sum less than 77 = 1
    so prob of sum not less than 77 = 0

    c) prob of sum between 33 and 77 ??
    there are 3 such numbers, namely 34, 35, and 36
    so prob(of your event) = 3/36 = 1/12

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