Question

What is the HM of 1,1/2, 1/3,......1/n?
(a) n
(b) 2n
(c) (n +1)​

Answer 1

Answer:

I think the answer should be 2/(n+1)

Answer 2

Take the reciprocal of the given terms

Reciprocal of 1 = 1

1/2 =2

1/3 = 3

1/n =n

Mean of reciprocal = Sum/n

=(1+2+3+....n)/2

= n+1/2

Harmonic mean = Reciprocal of mean

=2/n+1