There are n-points `(ngt2)` in each to two parallel lines. Every point on one line is joined to every point on the other line by a line segment drawn within the lines. The number of point (between the lines) in which these segments intersect, is

There are n( gt2) points in each of two parallel lines Every point on one line is joined to every point on the other line by a line segment drawn within the lines . The number of points (between the lines) in which these segments intersect is :

Interior point of a line segment

Mid point of a line Segment

Two line segments may intersect at two points

Find the mid points of the line segment joining the points .

Assertion: If each of m points on one straight line be joined to each of n points on the other straight line terminated by the points, then number of points of intersection of these lines excluding the points on the given lines is (mn(m-1)(n-1))/2 Reason: Two points on one line and two points on other line gives one such point of intersection. (A) Both A and R are true and R is the correct explanation of A (B) Both A and R are true R is not the correct explanation of A (C) A is true but R is false. (D) A is false but R is true.

25 lines are drawn in a plane. Such that no two of them are parallel and no three of them are concurrent. The number of points in which these lines intersect, is: