Problem 52629. Count the ways to draw non-intersecting chords between points on a circle

Created by ChrisR

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There are 9 ways to draw non-intersecting chords between four points on the perimeter of a circle (including no chords at all). In this case there is no way to draw three chords between the four points because two would have to intersect at one of the points or elsewhere. 
Write a function to count the ways to draw non-intersecting chords between a given number of points.

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Last Solution submitted on Jul 17, 2024

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Rafael S.T. Vieira on 28 Nov 2022

Tip: Counting is not as easy as we think. It depends on what we are counting. Counting primes up to n, for instance, is hard. However, It is easy when a pattern or formula can be found...

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Problem 52629. Count the ways to draw non-intersecting chords between points on a circle

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Last 200 Solutions

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Problem 52629. Count the ways to draw non-intersecting chords between points on a circle

Solution Stats

Last 200 Solutions

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Solution Comments

Problem Recent Solvers9

Suggested Problems

More from this Author306

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