Pandigital Olympic Circles Puzzle

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target sum for each circle
11
12
13
14
15
The pandigital numbers 1 to 9 are arranged in five olympic rings as shown. If you add up the numbers in a circle, you get the same sum for each of the circles.

External Links

Pandigital Number (Wolfram MathWorld)

Permanent Citation

Frederick Wu, Sidong Zeng
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​"Pandigital Olympic Circles Puzzle"​
​http://demonstrations.wolfram.com/PandigitalOlympicCirclesPuzzle/​
​Wolfram Demonstrations Project​
​Published: March 7, 2011