Question

Evaluate:
(i) $\frac{8^{-1}\times 5^3}{2^{-4}}$

(ii) $(5^{-1}\times 2^{-1})\times 6^{-1}$

Answer 1

(i) $\frac{8^{-1}\times 5^3}{2^{-4}}$

$=\frac{2^{-3}\times 5^3}{2^{-4}}$

$=\frac{2^4\times 5^3}{2^3}$ $=250$

(ii) $(5^{-1}\times 2^{-1})\times 6^{-1}$

$=(\frac{1}{5}\times \frac{1}{2})\times \frac{1}{6}$

$=\frac{1}{60}$