Select the option that is related to the third number in the same way as the second number is related to the first number and the sixth number is related to the fifth number.

16 : 263 :: 18 : ? :: 22 : 491

331

16 : 263 :: 18 : ? :: 22 : 491

The logic followed here is :

Ist number² + 7 = IInd number

As

16 : 263

16² + 7

= 256 +7

= 263

And

22 : 491

= 22² + 7

= 484 + 7

= 491

Similarly

18 : ?

= 18² + 7

= 324 + 7

= 331