Three of the following four triads are alike in a certain way as they are formed by performing the same mathematical operations among themselves and thus form a group. Which triad does NOT belong to that group?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 72 : 16 : 8.
The logic used here is: 1st number + 2nd number = (3rd number)2
Option 1: 36 : 13 : 7: 36 + 13 = 49 = 72: This follows the logic.
Option 3: 72 : 16 : 8: 72 + 16 = 88 is not equal to 82: This does not follow the logic.