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 its constituent digits. E.g. 13 - Operations on 13 such as adding /deleting/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: C
Explanation
The correct answer is option 3 i.e. 29-44-14.
1. (14 – 44 – 29) → (14 + 44) ÷ 2 = 58 ÷ 2 = 29
2. (36 - 66 - 51) → (36 + 66) ÷ 2 = 102 ÷ 2 = 51
3. (29 – 44 – 14) → (29 + 44) ÷ 2 = 73 ÷ 2 = 36.5 ≠ 14
4. (21 - 51 - 36) → (21 + 51) ÷ 2 = 72 ÷ 2 = 36