Permutations And Combinations Question 86
Question: $ ^{n}C _{r}{{\div }^{n}}{C _{r-1}}= $ [MP PET 1984]
Options:
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: CShow Answer
  Answer:
Solution:
 BETA
  BETA 
             
             
           
           
           
          