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 by joining the vertices of a regular polygon of side n is denoted by T_(n) If T_(n+1)-T_(n)=21 then the value of n will be -

The number of triangles which can be formed by using the vertices of a regular polygon of (n + 3) sides is 220. Then n =

The number of triangles which can be formed by using the vertices of a regular polygon of (n+3) sides is 220. Then n is equal to :a)8 b)9 c)10 d)11

Let T_(n) denote the number of triangles which can be formed by using the vertices of a regular polygon of n sides. If T_(n + 1) - T_(n) = 36 , then n is equal to

Let T_(n) denote the number of triangles which can be formed by using the vertices of a regular polygon of n sides. If T_(n+1)-T_(n)=28 Then n =

Let T _(n) denote the number of triangles which can be formed by using the vertices of a regular polygon of n sides. If T _(n +1) - T _(n) = 36, then n is equal to

Let T_(n) denote the number of triangles which can be formed using the vertices of a regular polygon of n sides . If T_(n+1)-T_(n)=21 then find the values of n .

Let T_n denote the number of triangles which can be formed using the vertices of a regular polygon of n sides . If T_(n+1)-T_n=21 , then n equals :

Let T_n denote the number of triangles which can be formed using the vertices of a regular polygon of n sides. If T_ (n+1)-T_n = 21 , then n is equal to