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.

There are 10 points in a plane, no three of which are in the same straight line, except 4 points, which are collinear. Find the number of lines obtained from the pairs of these points,

Three are 12 points in a plane, no of three of which are in the same straight line, except 5 points whoich are collinear. Find (i) the numbers of lines obtained from the pairs of these points. (ii) the numbers of triangles that can be formed with vertices as these points.

There are 11 points in a plane. No three of these lies in the same straight line except 4 points, which are collinear. Find , (i) the number of straight lines that can be obtained from the pairs of these points ? (ii) the number of triangles that can be formed for which the points are their vertices ?

There are 11 points in a plane. No three of these lies in the same straight line except 4 points, which are collinear. Find, (i) the number of straight lines that can be obtained from the pairs of these points? (ii) the number of triangles that can be formed for which the points are their vertices?

Out of 18 points in a plane, no three are in the same straight line except 5 point which are collinear. Find the number of lines that can be formed by joining them?

There are 10 points in a plane of which 4 are collinear, Find the number of lines obtained from the pairs of these points.

There are n points in a plane no three of which are in the same line excepting p points which are collinear . The number of triangle fomed by joining them is