Base on the pythagorean theorem, we have : a² + b² = c². The first set : 4,5,6 - 4² + 5² = 6² (a possible set) The second set : 6² + 8² = 10² (another possible set) The last set : 5² + 12² = 13² (also possible)
There are a lot more sets, but I'll only list 3. Hope this helps :)
