Permutations And Combinations Question 57

Question: If a polygon has 44 diagonals, then the number of its sides are [MP PET 1998; Pb. CET 1996, 2002]

Options:

A) 7

B) 11

C) 8

D) None of these

Show Answer

Answer:

Correct Answer: B

Solution:

  • Since $ ^{n}C_2-n=44\Rightarrow n=11 $ .