toddwilkins23TODD toddwilkins23TODD

30-04-2017
Mathematics

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Suppose that a class contains 15 boys and 30 girls, and that 10 students are to be selected at random for a special assignment. Find the probability that exactly 3 boys will be selected

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cinniepooh11 cinniepooh11

30-04-2017

[15c 3*30c 7] over 45 c 10

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