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)
Answer & explanation
Correct answer: option 4
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