Posted by **Anonymous** on Wednesday, March 27, 2013 at 4:02pm.

Two points are chosen uniformly at random on the unit circle and joined to make a chord C1. This process is repeated 3 more times to get chords C2,C3,C4. The probability that no pair of chords intersect can be expressed as a/b where a and b are coprime positive integers. What is the value of a+b?

- algebra -
**gab**, Saturday, March 30, 2013 at 10:12pm
773

- algebra -
**Sarah**, Monday, May 6, 2013 at 7:41pm
wrong

- algebra -
**Anonymous**, Friday, May 10, 2013 at 11:51pm
171

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