Combinatoricsmedium
0:00.0
A set of points lies on a plane such that no three points are collinear. If we draw all possible lines connecting pairs of points, and then select two of these lines at random, what is the probability that the two lines intersect at one of the points?
A set of points lies on a plane such that no three points are collinear. If we draw all possible lines connecting pairs of points, and then select two of these lines at random, what is the probability that the two lines intersect at one of the points?