There are 10 points in a plane, no three of which are in the same straight line, except 4 points,
Channel: Doubtnut
Date: 03/01/2020

There are 10 points in a plane, no three of which are in the same straight line, except 4 points, which are collinear. Find (i) the number of lines obtained from the pairs of these points, (ii) the number of triangles that can be formed with vertices as these points.