Correct Answer - Option 3 : 8
Given: 36 : 27 :: 16 : ?
36 → (6)2 : (3)3 → Second number is cube of the number, which is half of the under root of the first number.
Similarly,
16 → (4)2 : (2)3 → Second number is cube of the number, which is half of the under root of the first number.
Hence, 8 is correct.