Question

Mark (✓) against the correct answer
${\left(\frac{-1}{2}\right)}^3=?$

(a) $\frac{-3}{2}$
(b) $\frac{-1}{8}$
(c) $\frac{-1}{6}$
(d) none of these

Answer 1

(b) $\frac{-1}{8}$
We have:
${\left(\frac{-1}{2}\right)}^3=\frac{-1}{2}\times \frac{-1}{2}\times \frac{-1}{2}=\frac{-1}{8}$