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

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asked Mar 14, 2018 231k views

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Nanofarad · Answer 1 · 2018-03-17T21:50:11+0000

If order doesn't matter (e.g. all the positions in the committee are essentially identical) then the number of possible choices is
$\dbinom97=(9!)/(7!(9-7)!)=36$ .

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

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