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?

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

If there are 10 points in a plane such that n of them are in the same straight line , triangles with the vertices at these points that can be formed by joining them are 110 , then the value of n will be -

There are n points in space , no four of which are in the same plane with the exception of m points all of which are in the same plane How many planes can be formed by joining them ?

There are n points in a plane , of which no three are collinear expept m which are collinear. Find the number of triangles formed by joining the points.

five points are given on one of two parallel straight lines and ten points are given on the other straight line. How many triangles can be formed by taking these points as vertices of a triangle ?

There are n points in a plane of which m points are collinear. How many lines can be formed from these points ?

How many triangles can be formed by joining 6 points lying on a circle ?

There are n points in a plane of which no three are in a straight line except 'm' which are all in a straight line. Then the number of different quadrilaterals, that can be formed with the given points as vertices, is

There are 15 points in a plane of which 4 points lie in one stright line and another 5 points lie in another straight line . The two lines are parallel and no three of the remaining 6 points are collinear . Find (a) the number of straight lines and (b) the number of trangles that can be formed by joining the 15 points .

There are 10 points in a plane of which 4 are collinear, find the number of triangles that can be formed from these points.