Four triads of numbers 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 numbers, without breaking down the numbers into their 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.)
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 17-27-67.
Logic: 1st number + 20 = 2nd number, 2nd number - 20 = 3rd number
All follow the same logic while,
17-27-67 → 17 + 10 = 27, 27 + 40 = 67