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 2
The logic followed here is :
(ist number) × (ist number - 2 ) = second number
18 : 288 ⇒ 18 × (18 - 2 ) = 288
11 : 111 ⇒ 11 × (11 - 2 ) = 99 ≠ 111
12 : 120 ⇒ 12 × (12 - 2 ) = 120
13 : 143 ⇒ 13 × (13 - 2 ) = 143