Happy Number Example 49 97 10 1 130 4 16 2 = 9 81 2 = 9 81 2 = 7 49 2 = 1 1 2 = 3 9 2 = 0 0 2 = 1 1 2 = 0 0 2 = Pick a number Add result of the squareof each digit Go same for new number If reach 1 this is Happy Number A Happy Number w3resource.com