9 students volunteer for a committee. How many different 7-person committees can be chosen?

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9 students volunteer for a committee. How many different 7-person committees can be chosen?

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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A.181,440 B.36 C.362,880 D.1
You want to choose 7 people from a set of 9

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9 C 7
You use the formula of nCr. n is the total number you are choosing from. r is the number you want to choose.
The formula is n! / (r! * (n-r)!) where n is 9 and r is 7
yep @wolf1728 !
9!/(7!*(9-7)!)
9! / (7! * 2!) which equals 9 * 8 / 2 = 72 / 2 = 36 which is B
Thanks a lot the problem was that i needed a calculator @wolf1728
Actually, if you cancel the factors correctly you don't need a calculator
thanks anyway , i have not took math and i forgot all of this , this is for a different class (CCP) @wolf1728
Sorry I just saw your tag back I see @wolf1728 is helping you now :D

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