Question

Which number should be multiplied by $72$ to make it a perfect cube?

• A. $3$
• B. $2$
• C. $9$
• D. $8$

Answer 1

Answer: (A)

$3$

Expressing $72$ in terms of its factors, we get

$\Rightarrow 72=8\times 9=2^3\times 3^2$

To make this a perfect cube, we need to multiply $72$ by $3$ which will give us $2^{3}X{3}^3$.