Correct Answer - d
(i) `a=b^(33)` possible when b =1 or 2
(ii) Consider 5a3b as a perfect cube and get the values of a and b using `=b^(3)` and `agtb`
(iii) As a `agtb` and `a=b^(3)` a is the greatest possible single digit perfect cube
(iv) Evaluate its cube root and subtract form the number
