(i) 192 = 2 × 2 × 2 × 2 × 2 × 2 × 3
Here, one 3 is left which is not in a triplet.
If we divide 192 by 3, then it will become a perfect cube. Thus, 192 ÷ 3 = 64 = 2 × 2 × 2 × 2 × 2 × 2 is a perfect cube.
Hence, the smallest number by which 192 should be divided to make it a perfect cube is 3.
(ii) 704 = 2 × 2 × 2 × 2 × 2 × 2 × 11
Here, one 11 is left which is not in a triplet.
If we divide 704 by 11, then it will become a perfect cube.
Thus, 704 ÷ 11 = 64 = 2 × 2 × 2 × 2 × 2 × 2 is a perfect cube.
Hence, the smallest number by which 704 should be divided to make it a perfect cube is 11
