Question

The harmonic mean of $4,8,16$ is

• A. 6.4
• B. 6.7
• C. 6.85
• D. 7.8

Answer 1

Answer: (C)

H.M. of $4,8,16=\frac{3}{\frac{1}{4}+\frac{1}{8}+\frac{1}{16}}=\frac{48}{7}$
$=6.85$