SOLUTION: prove that C(n , r) + C(n , r-1) = C(n+1 , r+1)

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Question 1076328: prove that C(n , r) + C(n , r-1) = C(n+1 , r+1)
Answer by ikleyn(52788) About Me  (Show Source):
You can put this solution on YOUR website!
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This statement is WRONG.