Three vertices of a convex n sided polygon are selected. If the number of triangles that can be constructed such that none of the sides of the triangle is also the side of the polygon is 30, then the polygon is a

Let A_(1),A_(2),A_(3)...,A_(n) are the vertices of a polygon ofnsides.If the number of pentagons that can beconstructed by joining these vertices such that none of the side of the polygon is also the side ofthe pentagon is 36, then the value of 'n' is :

If the number of diagonals of a regular polygon is three times the number of its sides, find the number of sides of the polygon.

The number of diagonals for an n sided polygon is

The number of triangles that can be formed form a regular polygon of 2n + 1 sides such that the centre of the polygon lies inside the triangle is

The number of triangles that can be formed form a regular polygon of 2n + 1 sides such that the centre of the polygon lies inside the triangle is

The number of triangle that can be formed by joining the vertices of a regular polygon of n sides is

The number of triangles that can be formed using the vertices of a 20 sided regular polygon such that the triangle and the polygon does not have any side common is

The number of triangles that can be formed using the vertices of a 20 sided regular polygon such that the triangle and the polygon does not have any side common is

Consider a regular polygon with 10 sides, What is the number of triangles that can be formed by joining the vertices which have no common side with any of the sides of the polygon?

A polygon has 44 diagonals the number of sides of the polygon is