There are 5 lines no two of which are parallel and no three of which are concurrent. If their points of intersections are joined to form lines, the probability of a new line drawn is

There are 10 straight lines in a plane no two of which are parallel and no three are concurrent.The points of intersection are joined,then the number of fresh lines formed are

There are n straight lines in a plane, no two of which are parallel, and no three pass through the same point . Their points of intersection are joined . Then the number of fresh lines thus obtained is :

There are n straight lines in a plane, no two of which are parallel and no three pass through the same point. Their points of intersection are joined. The number of fresh lines thus formed is

There are 20 straight lines in a plane so that no two lines are parallel and no three lines are concurrent. Determine the number of points of intersection.

If 10 lines are drawn in a plane such that no two of them are parallel and no three are concurrent, then the total number of points of intersection are