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3 years ago

7

There are 15 boys and 16 girls in Gabriel’s class. One person is chosen at random. What is the probability that the person chose

n to hand out books is a girl?

1 answer:

aalyn [17]3 years ago

7 0

Answer:

16/31

Step-by-step explanation:

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Step-by-step explanation:

Number of combinations of selecting r things out of n = $^nC_r=\dfrac{n!}{r!(n-r)!}$

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Given: A restaurant menu has 5 kinds of soups, 7kinds of main courses, 6 kinds of desserts, and 5 kinds of drinks.

If a customer randomly selects one item from each of these four categories, then by fundamental counting principle , the number of different outcomes are possible = $^5C_1\times \ ^7C_1\times\ ^6C_1\times\ ^5C_1 =5\times7\times6\times5=1050$

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