There are 8 points, in a plane, how many different triangles can be formed using these points (no three points are collinear)?

There are 20 points in a plane. How different triangles can be formed with these points? (no three points are collinear).

How many different straight lines can be formed from 30 points in a plane? (no three points are collinear)

How many Triangles can be formed by joining 12 points, 4 of which are collinear.

Twelve points are marked on a plane so that no three points are collinear. How many different triangles can be formed joining the points.

How many triangles may be formed by joining any three of the nine points when no three of them are collinear ,

A plane contains 20 points of which 6 are collinear. How many different triangle can be formed with these points?

There are n points in a plane of which m points are collinear. How many lines can be formed from these points ?