There are 10 non collinear points in a plane. By joining them how many triangles can be made?

There are 10 points on a circle. By joining them how many chords can be drawn?

There are 18 points in a plane of which 5 are collinear. How many straight lines can be formed by joining them?

Out of 18 points in a plane, no three are in the same line except 5 points which are collinear How many triangles can be formed by joining the given points.

In a plane there are 10 points out of which no three are collinear except the four which lie on a straight line . By joining these 10 points how many triangles may be obtained.

out of 18 points in a plane no three are in the same straight lines except five points which are collinear how many triangles can be formed by joining them?

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

Twenty points are marked on a plane so that non three points are collinear except 7 points. How many triangle can be formed by joining the points?

There are 12 points in a plane, no three points are collinear except 6 points. How many different triangles can be formed?

Consider 12 points on a plane of which five are collinear. How many triangles can be formed using the 12 points?