SOLUTION: WHat is the value you of nCr when n= r+1?

Question 875715: WHat is the value you of nCr when n= r+1?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
n C r = (n!)/(r!(n-r)!)

n C r = ((r+1)!)/(r!(r+1-r)!)

n C r = ((r+1)!)/(r!(1)!)

n C r = ((r+1)!)/(r!*1)

n C r = ((r+1)!)/(r!)

n C r = ((r+1)*r!)/(r!)

n C r = r+1

So, n C r = r+1 when n = r+1
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