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Questions  

If Hn=1+12+13++1n then value of 

1+32+53++2n1nis 

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a
Hn+n
b
2n−Hn
c
n−1+Hn
d
Hn+2n

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detailed solution

Correct option is B

1+32+53+⋯+2n−1n=(2−1)+2−12+2−13+⋯+2−1n=2n−Hn


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