Select the option in which the numbers are related in the same way as are the numbers of the following set.
(12, 14, 143)
Answer & explanation
Correct answer: option 4
(12, 14, 143)
The logic followed here is :
(Ist number - 1) × (IInd number -1 ) = IIIrd number
(12 - 1) × ( 14 - 1 )
= 11 × 13 = 143
Similarly
(15, 19, 252)
(15 - 1) × ( 19 - 1 )
= 14 × 18 = 252