How many triangles can be obtained by joining 12 points, five of which are collinear?

Asked by Topperlearning User | 4th Jun, 2014, 01:23: PM

Expert Answer:

The number of triangles by 12 non-collinear points are , but 5 points are collinear.
Thus, the numbers of triangle are

Answered by  | 4th Jun, 2014, 03:23: PM