There are 8 balls. 7 of them weigh the same. 1 of them has a different weight, (you don't know if it's heavier or lighter). How do you find the odd ball with 2 weighs? If 1 = Single, 2 = Double, 3 = Triple, 4 = Quadruple, what are 5, 6, 7, 8, etc. called?