Analogy - Verbal and Reasoning

Directions to SolveIn each of the following questions find out the alternative which will replace the question mark.
Q1:

27 : 125 :: 64 : ?

A 162

B 216

C 517

D 273

ANS:B - 216

Explanation: 27 → 33; 125 → 53; 64 → 43 Therefore ? = 63 = 216.