Solve the following question.Aman has 9 friends (4 boys and 5 girls). In how many ways can he invite them, if there have to be exactly 3 girls in the invitees? (in numerical value)Correct answer is '160'. Can you explain this answer?

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Solve the following question.

Aman has 9 friends (4 boys and 5 girls). In how many ways can he invite them, if there have to be exactly 3 girls in the invitees? (in numerical value)

Correct answer is '160'. Can you explain this answer?

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Solve the following question.Aman has 9 friends (4 boys and 5 girls). ...

The 3 girls can be chosen in ⁵C₃ = 10 ways.

Of the 4 boys, he has a choice of inviting any number from 0 to all 4 in 2⁴ ways.

Thus, the total number of choices is 10 x 2⁴ = 160.

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Solve the following question.Aman has 9 friends (4 boys and 5 girls). In how many ways can he invite them, if there have to be exactly 3 girls in the invitees? (in numerical value)Correct answer is '160'. Can you explain this answer?

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