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)

6.85

Answer 2

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