Question

pls tell this ans also...

Answer 1

Let the number to be multiplied to $4^{-3}$ is m.

$4^{-3} \times m = \frac{1}{16} \\ \\ \Rightarrow \frac{1}{4^3} \times m = \frac{1}{16} \\ \\ \Rightarrow m = \frac{1}{16} \times 4^3 \\ \\ \Rightarrow m = \frac{1}{16} \times 64 =\boxed{4}$

So it should be multiplied by 4.