Consider a polygon of sides 'n' which satisfies the equation `3*.^(n)P_(4)=.^(n-1)P_(5)`.
Q. Number of quadrilaterals thatn can be formed using the vertices of a polygon of sides 'n' if exactly 1 side of the quadrilateral in common with side of the n-gon, is

Consider a polygon of sides 'n' which satisfies the equation 3*.^(n)P_(4)=.^(n-1)P_(5) . Q. Number of quadrilaterals that can be made using the vertices of the polygon of sides 'n' if exactly two adjacent sides of the quadrilateral are common to the sides of the n-gon is

Consider a plygon of sides 'n' which satisflies the equation 3. .^(n)p_(4) = .^(n-1)p_(5) Number of quadrilaterals that can be made using the vertices of the polygon of sides 'n' if exactly two adjacent side of the quadrilateral are common to the sides of polygon is

How many quadrilaterals can be formed joining the vertices of a convex polygon of n sides?

Number of quadrilaterals which can be constructed by joining the vertices of a convex polygon of 20 sides if none of the side of the polygon is also the side of the quadrilateral is

The number of different quadrilaterals that can be formed by using the vertices of a regular decagon,such that quadrilaterals has no side common with the given decagon,is

Number of triangles that can be made using the vertices of a polygon of 10 sides as their vertices and having exactly one side common with the polygon is 10k, then k =

Find the number of diagonals by joining the vertices of a polygon of n sides.

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