Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the number-pair that is different from the rest.

11 : 1331 12 : 1757 7 : 343 3 : 27

12 : 1757

The logic is: (Ist number)3 =  IInd number 11 : 1331  - 113 = 1331 12 : 1757 - 123 = 1728 but 1757 is given which is odd 7 : 343    - 73 = 343 3 : 27     - 33 = 27