A) \[\frac{n-r}{r}\]
B) \[\frac{n+r-1}{r}\]
C) \[\frac{n-r+1}{r}\]
D) \[\frac{n-r-1}{r}\]
Correct Answer: C
Solution :
On simplifying you will get \[\frac{n-r+1}{r}\].You need to login to perform this action.
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