SOLUTION: what is the value of nCr when n-r=1

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Question 609330: what is the value of nCr when n-r=1
Answer by stanbon(75887) About Me  (Show Source):
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what is the value of nCr when n-r=1
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nCr = n!/[(n-r)!*r!]= n!/[1*r!] = n*(n-1)*(n-2)...(n-r+1)
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Cheers,
Stan H.
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