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anonymous
 5 years ago
what is 10C6?
anonymous
 5 years ago
what is 10C6?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0This generally means how many ways can you count 6 things from 10. in this case it is 210

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0same as \[\dbinom{10}{6}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0sooo 10*9*8**6*5*4/6?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok yes, as long as the 6 in your denominator is really 6*5*4*3*2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0and the missing 7 is a typo.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0but there is an easier way to do this. it is fairly clear that \[\dbinom{10}{6}=\dbinom{10}{4}\] since picking 6 out of ten people to invite to dinner is the same as picking 4 to exclude. it is easier to think of the second.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[\frac{10\times9 \times 8\times 7}{4\times 3\times 2}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0or \[\frac{10 \times9 \times 8\times 7\times 6\times 5\times 4}{6 \times 5 \times4 \times3\times 2}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0wecome. general formula is \[dbinom{n}{k}=\frac{n!}{k!\times (nk)!}\] but you really don't want to compute that way. cancel first, multiply last.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oops \[\dbinom{n}{k}\]
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