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In how many ways can a 3-person committee be selected from a group of 6?
Wiki User
∙ 13y ago
-3
Richard Grimes
Wiki User
∙ 13y agoThe answer is (6!/3!)/3!. This is the quotient six factorial divided by three factorial, divided by 6. It comes to 20.
You divide by six because the different orders of selection do not create unique committees. Choosing Jane, Paul and Alex, for example, gives you the same committee as if you had chosen Jane, Alex and Paul, or Paul Jane and Alex. There are six ways that three individuals can be ordered (3!).
Wiki User
∙ 11y agoUsing Numbers as identifiers: 34
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That is incorrect.
There are, in fact, 9C5 = 9*8*7*6/(4*3*2*1) = 126 ways.
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