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Random chord problem (Posted on 2009-05-11)

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?

See The Solution Submitted by Jer

Rating: 3.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

re(2): solution, maybe (good question)

| Comment 15 of 17 |

(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 2009-05-12 13:47:39

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