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If (n-r+1)^(n)C(r-1)=mxx^(n)C(r) then m...

If `(n-r+1)^(n)C_(r-1)=mxx^(n)C_(r)` then m=

A

`r!`

B

1

C

n

D

r

Text Solution

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The correct Answer is:
D
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