Fun With Mathematics Number 9 0 * 9 + 1 = 11 * 9 + 2 = 1112 * 9 + 3 = 111123 * 9 + 4 = 11111234 * 9 + 5 = 1111112345 * 9 + 6 = 111111123456 * 9 + 7 = 11111111234567 * 9 + 8 = 1111111112345678 * 9 + 9 = 111111111 Fun with mathematics number 9 Share : Twitter