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A polygon has prime number of sides. If ...

A polygon has prime number of sides. If 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

Text Solution

Verified by Experts

The correct Answer is:
B
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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

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Knowledge Check

  • The number of diagonals of a polygon of n sides is

    A
    `(n(n-1))/2`
    B
    `(n(n-3))/2`
    C
    `((n-1)(n-2))/2`
    D
    none of these

  • The number of diagonals of a polygon of 15 sides is

    A
    105
    B
    90
    C
    75
    D
    60

  • The number of diagonals of a polygon of 15 sides is:

    A
    105
    B
    90
    C
    75
    D
    60

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