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: B
Explanation
The correct answer is option 2 i.e. 4 : 16 : 20.
The logic used here is: 1st number + 2nd number + 1 = 3rd number
Option 2: 4 : 16 : 20: 4 + 16 + 1 = 21, This does not follow the logic.