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Circle and Spots (Posted on 2004-12-27) Difficulty: 4 of 5
Two or more spots are placed anywhere on a circle's circumference. Every pair is joined by a straight line. Given n spots, what is the maximum number of regions into which the circle can be divided?

No Solution Yet Submitted by SilverKnight    
Rating: 3.0000 (6 votes)

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Hints/Tips Possible solution, could it be??? | Comment 1 of 9

I just understood that my posting was totally wrong

Edited on December 27, 2004, 7:36 pm

This is n + number of regions in a regular n-gon with all diagonals drawn.

Which is n + Sloane's A007678

I think the above might be correct.

Edited on December 27, 2004, 8:14 pm
  Posted by Hugo on 2004-12-27 19:34:47

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