Number of triangles that can be formed by joining the 10 non-collinear points on a plane is

Assertion (A) : The number of triangles that can formed by joining the mid-points of any three adjacent faces of a cube is 20 Reason (R): If there are n point on a plane and none of them are collinear, then the number of triangles that can be formed is C(n, 3)

How many triangles may be formed by joining any three of nine points on a plane when five of them are collinear.

The number of triangles that can be formed by n points in a plane where no three points are collinear is ______ and when p of the given points are collinear is ____ .

How many triangles may be formed by joining any three of nine points on a plane when no three of them are collinear.