There are 10 points in a plane out of these points no three are in the same straight line
Channel: Doubtnut
Date: 24/05/2020

There are 10 points in a plane out of these points no three are in the same straight line except 4 points which are collinear. How many  (i) straight lines  (ii) trian-gles  (iii) quadrilateral, by joining them?