Permutations And Combinations Question 160
Question: The value of $ \sum\limits _{r=0}^{n-1}{\frac{^{n}C _{r}}{^{n}C _{r}+{{}^{n}}{C _{r+1}}}} $ equals [MP PET 2004]
Options:
A) $ n+1 $
B) $ \frac{n}{2} $
C) $ n+2 $
D) None of these
Correct Answer: BShow Answer
Answer:
Solution:
BETA
