Question

The number $0.0000000000085$ in standard form is $=8.5\times {10}^m$. Value of $\mathrm{mod}\left(m\right)$ is

Answer 1

$0.0000000000085=\frac{85}{0000000000000}$
$=\frac{85}{{10}^{13}}=\frac{8.5\times 10}{{10}^{13}}=8.5\times 10\times {10}^{-13}$
$=8.5\times {10}^{-12}$