Math Problem: Use 3 numbers to sum to 50: 1,5,9,11,21,25. You could try every possible unordered pair and check whether that and one of the remaining numbers sums to 50. That methodology requires you to

I don't often see a lot of pure maths posts here, so I thought I would contribute, with one of the most useful formulas I use in everyday life (well kind of) The other day, someone asked me what is the