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

There are 8 points, in a plane, how many different triangles can be formed using 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)

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

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

There are 20 points in a plane, of which 5 points are collinear and no other combination of 3 points are collinear. How many different triangles can be formed by joining these points?

A plane is named by three points on the plane which are collinear ?

There are 25 points in a plane. Six of these are collinear and no other combination of 3 points are collinear. How many different straight lines can be formed by joining these points?

There are 20 points in a plane out of which 7 points are collinear and no three of the points are collinear unless all the three are from these 7 points. Find the number of different straight lines.

There are 10 points on a plane of which 5 points are collinear. Also, no three of the remaining 5 points are collinear. Then find (i) the number of straight lines joining these points: (ii) the number of triangles, formed by joining these points.