In the following  question, four number pairs are given. In each pair the number on left side of (-) is related to the number of the right side of (-) with some Logic/Rule/Relation. three pairs are similar on basis of some Logic/Rule/Relation. Select the odd one out from the given alternatives. (NOTE : Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13 - Operations on 13 such as adding/subtracting/multiplying etc. to 13 can be performed. Breaking  down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed)

12 - 167

 7 - 71

= 7 × 10 + 1 = 71

11 - 111

= 11 × 10 + 1 = 111

8 - 81

= 8 × 10 + 1 = 81

12 - 167

= 12 × 10 + 47 = 67 ODD