35 is related to 48 following a certain logic. Following the same logic, 80 is related to 99. To which of the following is 143 related, following the same logic?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 168.
Logic Used : First Number = ( x2 - 1 ), Second Number = ( x + 1 )2 - 1
⇒35 is related to 48
(62 - 1 ) = 36 - 1
(6 + 1 )2 - 1 = 49 - 1 = 48
⇒80 is related to 99
(92 - 1 ) = 81 - 1 = 80
(9 + 1 ) 2 - 1 = 100 - 1 = 99
⇒143 related
(122 - 1 ) =144 - 1 = 143
(12 + 1 )2 - 1 = 169 - 1 = 168
Hence, 168 is the correct answer.