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: A
Explanation
The correct answer is option 1 i.e. 7 : 15 : 48.
Logic: 1st number × 2 - 1 = 2nd number; (1st number)2 = 3rd number
All follow the same logic while,
Option 1: 7 : 15 : 48 ⇒ 7 × 2 + 1 = 14 + 1 = 15; (7)2 = 49