Select the option in which the numbers are related in the same way as are the numbers of the following set.
(12, 121, 169)
Answer & explanation
Correct answer: option 4
(12, 121, 169)
The logic followed here is :
(Ist number - 1)2 = IInd number
(Ist number + 1)2 = IInd number
as
(12 - 1)2 = 112 = 121
(12 + 1)2 = 132 = 169
Similarly
(17, 256, 324)
(17 - 1)2 = 162 = 256
(17 + 1)2 = 182 = 324