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

11 : 81 :: 22 : 400 :: ? : 225

17

11 : 81 :: 22 : 400 :: ? : 225

The logic followed here is :

(Ist term - 2)² = IInd number

AS

11 : 81

(11 - 2)²

= 9²

= 81

And

22 : 400

(22 - 2)²

= 20²

= 400

Similarly

? : 225

(17 - 2)²

= 15²

= 225

Hence 17 is correct answer