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OpenStudy (anonymous):
In how many ways can a committee of 4 be chosen from a group of 9 people? a.) 36 b.)126 c.)3,024
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OpenStudy (anonymous):
i tried 9*8*7*6 , but i think that was wrong
OpenStudy (anonymous):
9C2 do you know about combinatronics ?
OpenStudy (anonymous):
i'm actually learning about it now
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