Question

find the smallest number by which each of the following numbers must be multiplied to obtain a perfect cube 243

Answer 1

243=3×3×3×3×3
3 is not in the pair, so 243 should be multiplied by 3 to make it a perfect cube.
Hope it helps:)

Answer 2

Answer:

1. 243

=Prime factors of 243 = 3×3×3×3×3

=Here 3 does not appear in 3's group.

3|243

3|81

3|27

3|9

3|3

|1

Therefore, 243 must be multiplied by 3 to make it a perfect cube.