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OpenStudy (anonymous):
In how many ways can a committee of 4 be chosen from a group of 9 people? 36 126 3,024
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OpenStudy (anonymous):
think about it as like the four slots can only be filled up by a certain number of people. So the first slot could have any of the 9 people, but then the second could only have one of the 8 remaining and so on for all four
OpenStudy (anonymous):
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