5
45
500
5 will make 12 and 13 a Pythagorean triad.
615, 492 and 369
164.
144, 156 60
Yes, I have used the Pythagorean system for numerous phrases and words and they all wind up equaling a number between 1 and 9. So go for it.
Fermat's triplets * * * * * No, wrong mathematician. They are Pythagorean triplets.
yes
ere on a marriage certificate is the serial number
It need not be. There are infinitely many Pythagorean triangles whose sides are not only rational, but whole numbers. For example, (3, 4, 5), (5, 12, 13), (7, 24, 25).