SOLUTION: Use the fact that nCr = n!/(n-r)!r! to show that: a.). nCr = nCn-r b.) (n/r)(n-1Cr-1) = nCr

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Question 947488: Use the fact that nCr = n!/(n-r)!r! to show that:
a.). nCr = nCn-r
b.) (n/r)(n-1Cr-1) = nCr
Answer by Edwin McCravy(20054)   (Show Source): You can put this solution on YOUR website!


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