Posted by **erica** on Monday, October 27, 2008 at 10:25am.

Is the following set of numbers a perfect triple? 13, 15, 18

Why are they, or why not

- math -
**drwls**, Monday, October 27, 2008 at 11:08am
That depends upon how you define a "perfect triple".

It usually means a trio of integers like 3, 4, and 5, that satisfy

a^2 + b^2 = c^2

7, 15 and 18 are such a triple, but 13, 15 and 18 are not.

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