(i) 108
Resolving 108 into Prime factors as follows
Here, factor 2 is not in groups of three.
∴ To make 108 as a perfect cube, we have to multiply it by smallest number 2.
(ii) 500
Resolving 500 into Prime factors as follows
Here, factor 2 is not in group of three
∴ To make 500 a perfect cube, we have to multiply it by smallest number 2.