Pick two points at random on a circle and draw the chord connecting them.
Pick two more points and connect them with a second chord.
What is the probability that these chords intersect?
(In reply to
re: solution, maybe (good question) by Daniel)
If you extend chords beyond the circle they are called secants.
The probability of them being parallel is zero.

Posted by Jer
on 20090512 13:47:39 