Question

Q.108 The harmonic mean of the values 5, 9, 11, 0,
17. 13 is:
(a) 9.5
(b) 6.2
(d) Impossible
(c) 0
​

Answer 1

Answer:

9.5 is the correct answer of this question

Answer 2

Answer:

(d) Impossible

Step-by-step explanation:

To Find:- Harmonic mean of values 5, 9, 11, 0, 17.13.

Solution:- If $h_{1} ,h_{2}, h_{3} ,h_{4},.......,h_{n}$ are n terms, then the harmonic mean is        given by $\frac{n}{\frac{1}{h_{1} } +\frac{1}{h_{2} } +\frac{1}{h_{3} } +.......+\frac{1}{h_{n} } }$

Therefore, Harmonic mean for the values 5, 9, 11, 0, 17.13 (n=5) is

                                      $\frac{5}{\frac{1}{5 } +\frac{1}{9} +\frac{1}{11 } +\frac{1}{0 }+\frac{1}{17.13} }$

As we know , $\frac{1}{0}$ i.e. anything divided by 0 is undefined and addition to undefined is also undefined.

Therefore, Harmonic mean of the given values in undefined.

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