Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number.
121 : 145 :: 169 : 197 :: 256 : ?
Answer & explanation
Correct answer: option 3
121 : 145 :: 169 : 197 :: 256 : ?
The logic followed here is :
121 : 145
121 = 112
And 145 = 122 + 1
169 : 197
169 = 132
197 = 142 + 1
Similarly
256 : ?
256 = 162
290 = 172 + 1