A polygon has prime number of sides. Its number of sides is equal to the sum of the two least consecutive primes.
A polygon has prime number of sides. Its number of sides is equal to the sum of the two least consecutive primes. The number of diagonals of the polygon is
(A) 4 (B) 5 (C) 7 (D) 10
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(B) 5
The two least consecutive prime numbers are, 2 and 3
Sum of two numbers = 2 + 3 = 5
By using formula = n(n – 3)/2
= 5(5 – 3)/2
= (5 × 2)/2
= 10/2
= 5
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