Which of the following are perfect cubes? (I)1000               (ii) 1728                  (iii) 3087

Explanation

(i)`1000` is a perfect cube.
`10times10times10=1000`
Hence, `1000` is a perfect cube of `10`.

(ii)`1728` is a perfect cube.
`12times12times12=1728`
Hence, `1728` is a perfect cube of `12`.

(iii)`3087` is not a perfect cube.
`3087=3xx3xx7xx7xx7`