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Four Pins and a Rubber Band (Posted on 2005-02-10) Difficulty: 5 of 5
Four pins are randomly nailed to a square board (according to a uniform probability distribution), and a rubber band is stretched completely around them to form a convex shape. What is the probability that the rubber band is in the shape of a triangle?

See The Solution Submitted by David Shin    
Rating: 4.1000 (10 votes)

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Answer Comment 11 of 11 |
The required probability is approximately 0.30556
  Posted by K Sengupta on 2008-03-03 11:02:36
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