(i) 675
675 = 3 × 3 × 3 × 5 × 5
= 33 × 52
∴To make a perfect cube we need to multiply the product by 5.
(ii) 1323
1323 = 3 × 3 × 3 × 7 × 7
= 33 × 72
∴To make a perfect cube we need to multiply the product by 7.
(iii) 2560
2560 = 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5
= 23 × 23 × 23 × 5
∴To make a perfect cube we need to multiply the product by 5 × 5 = 25.
(iv) 7803
7803 = 3 × 3 × 3 × 17 × 17
= 33 × 172
∴To make a perfect cube we need to multiply the product by 17.
