+239 The numbers 1, 2, 3, 4, 5, 6, 7, 8, and 9 are arranged in a list so that each number is either greater than all the numbers that come before it or is less than all the numbers that come before it. For example, 4, 5, 6, 3, 2, 7, 1, 8, and 9 is
read more .. +99 +99 Mar 14, 2016