Question

58.
The Harmonic mean of the values 5,9,11,0, 17, 13 is
(A) 9.5
(B) 6.2
(C) 0
(D) impossible​

Answer 1

Answer: (c) 0

Step-by-step explanation:

we know that,

Harmonic mean = n / (∑1/x_i)

where,

n=number of terms

(∑1/x_i)=sum of reciprocal of each term.

here,

n=6

(∑1/x_i)=$\frac{1}{5}+\frac{1}{9}+\frac{1}{11}+\frac{1}{0}+\frac{1}{17}+\frac{1}{13}$

=∞

therefore.

harmonic mean(HM)=0