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Harmonic Mean

Find the harm...

Question

Find the harmonic means between 2 and 10.

A

1.33

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B

2.22

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C

3.33

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D

4.33

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Solution

The correct option is B 3.33
Harmonic mean $= \frac{2 a b}{(a + b)}$
$a = 2, b = 10 H M = \frac{2 \times 2 \times 10}{12} = 3.33$

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