AP EAMCET202420 May 2024Morning ShiftMathematicsPermutation and CombinationActual
If a polygon of n sides has 275 diagonals. then n is
Options
- A25
- B35
- C20
- D15
Correct answer
A. 25
Step-by-step solution
Let n be the number of sides then Number of diagonals = n(n-3) 2 275= n(n-3) 2 n=25