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Topic: Can You Solve This \$500 Puzzle?
Replies: 1   Last Post: Aug 12, 2012 8:14 AM

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 Avni Pllana Posts: 546 Registered: 12/6/04
Re: Can You Solve This \$500 Puzzle?
Posted: Aug 12, 2012 8:14 AM

> YWorld, the collaborative network for professionals,
> loves Math. To debut one of our selective groups, the
> Puzzle Breaker Club, we're posting a deceptively
> simple puzzle for the world to solve. If you think
> you have what it takes to crack this geometric
> puzzle, try your skills at:
> http://www.YWorld.com/puzzle

I think the number of maximal sets of non-intersecting diagonals for 11-gon is 29, or F(11) = 29 .

By inspection we obtain following data: F(5) = 1, F(6) = 3, F(7) = 4, F(8) = 7. According to these data we have to do with a Fibonacci-like sequence, F(n) = F(n-1) + F(n-2). So, if we extrapolate the obtained data we can write:

F(9) = 11,
F(10)= 18,
F(11)= 29.

Best regards,
Avni

Date Subject Author
8/9/12 YWorld
8/12/12 Avni Pllana