Four number-pairs have been given, out of which three are alike in some manner and one is different. Select the one that is different.
Answer & explanation
Correct answer: option 1
The logic followed here is:
Ist number × 8 = second number
11 : 122 ⇒ 11 × 8 = 88 ≠ 122
14 : 112 ⇒ 14 × 8 = 112
21 : 168 ⇒ 21 × 8 = 168
18 : 144 ⇒ 18 × 8 = 144