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Mathematics
The H.M. of the reciprocal of first n natural numbers is :-
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Q. The H.M. of the reciprocal of first $n$ natural numbers is :-
Statistics
A
$\frac{ n +1}{2}$
B
$\frac{n}{\left(1+\frac{1}{2}+\frac{1}{3}+\ldots+\frac{1}{n}\right)}$
C
$\frac{2}{n+1}$
D
None of these
Solution:
Correct answer is (c) $\frac{2}{n+1}$