Identify the number that does NOT belong to the following series. 81, 54, 36, 27, 22 |
54 27 36 22 |
22 |
81 - 54 = 27 ( it is divisible by 9) 54 -36 = 18 ( it is divisible by 9) 36- 27 = 9 ( it is divisible by 9) 27 - 22 = 5 ( it is not divisible by 9) (odd) |