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 same 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)

24 - 575

The logic followed here Is :

(Ist number )² + 1 =  second number)

24 - 575 = 24² + 1 = 577 ≠ 576 (odd)

14 - 197  = 14² + 1 = 197

12 - 145 = 12² + 1 = 145

18 - 325 = 18² + 1 = 325