SOLUTION: Prove that nC( n-1 ) = n

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Question 871687: Prove that nC( n-1 ) = n
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
nC(n-1) = n!/(n-1)!1! = n

Alternatively, the number of ways to choose n-1 candidates out of n is the same as the number of ways to choose 1 candidate to be left out.