Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different.
NOTE: Operations should be performed on the whole mumbers, without breaking down the numbers into its constituent ( digits. E.g. 13-Operations on 13 such as adding / subtmeting/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.)
19 : 370
17 : 298
11 : 130
15 : 244
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 15 : 244.
Logic: Square of 1st number + 9 = 2nd number
All follow the same logic while,
15 : 244 → (15)2 + 9 = 234 ≠ 244