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
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 17.
11 : 81 → 11 - 2 = 9, (9)2 = 81
22 : 400 → 22 - 2 = 20, (20)2 = 400
Similarly, 17 : 225 → 17 - 2 = 15, (15)2 = 225