Question

If $H$ is the harmonic mean between $P$ and $Q$, then the value of $\left(H/P\right)+\left(H/Q\right)$ is

• A. $2$
• B. $PQ/(P+Q)$
• C. $(P+Q)/PQ$
• D. None of these

Answer 1

The correct option is A $2$

We have $\frac{2}{H}=\frac{1}{P}+\frac{1}{Q}$
$[\because H$ is the harmonic mean between $P$ and $Q]$
or $H/P+H/Q=2$.