Correct Answer - Option 2 : 4 ∶ 16
The logic is:
6 : 54 → 5 + 4 = 9 and 9 - 6 = 3
Similarly,
4 : 16 → 1 + 6 = 7 and 7 - 4 = 3
Hence, ‘4 : 16’ is the correct answer.
Other solution-
6 ∶ 54 → 54 is completely divisible by 6
Similarly;
4 : 16 → 16 is completely divisible by 4.