Each of two parallel lines has a number f distinct points marked on them. on one line there are 2 points P and Q and ont eh other there are 8 points. i. Find the number of triangles formed hving three of the 10 points as vertices. ii. How many of these triangles include P but exclude Q?

Each of two parallel lines has a number of distinct points marked on them. On one line there are 2 points P and Q and on the other there are 8 points. i. Find the number of triangles formed having three of the 10 points as vertices. ii. How many of these triangles include P but exclude Q?

Consider 2 parallel lines PQ and RS. Line PQ has two points A and B while RS has 8 points.Number of triangles that can be formed taking these 10 points as vertices of triangle is

There are 10 points on a straight line AB and 8 on another straight line AC, none of them being A. How many triangles can be formed with these points as vertices?

There are 18 points in a plane such that no three of them are in the same line except five points which are collinear. The number of triangles formed by these points, is

There are 10 points on a line and 11 points on another line, which are parallel to each other. How many triangles can be drawn taking the vertices on any of the line?