3 years ago

There are 7 males and 5 females and we need to select 4 different people. how many ways can we select 4 people?

Mathematics

1 answer:

saul85 [17]3 years ago

5 0

$\displaystyle \binom{12}{4}=\dfrac{12!}{4!8!}=\dfrac{9\cdot10\cdot11\cdot12}{2\cdot3\cdot4}=495$

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ki77a [65]

Answer:

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Step-by-step explanation:

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Answer:

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The other two problems are very similar to the explanation above. Treat the second problem's ending time as 14:00, since it is two hours after 12:00.

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3 0

2 years ago

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Answer:

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