Question

Question 4

In the following question, out of the four options, only one is correct. Write the correct answer:

The value fo $\frac{1}{4^{-2}}$ is
(a) 16
(b) 8
(c) $\frac{1}{8}$
(d) $\frac{1}{8}$

Answer 1

Using law of eponents , $a^{-m}=\frac{1}{a^m}\therefore \frac{1}{4^{-2}}=\frac{1}{\frac{1}{4^2}}=\frac{1}{\frac{1}{16}}=1\times 16=16$