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Please tell me how to simplify this question and get to the final answer. Chapter name- Sequence and Series.

Please tell me how to simplify this question and get to the final answer.
 
Chapter name- Sequence and Series.

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1 Answers

Aditya Gupta
2081 Points
5 years ago
Dear student,
Hn= ∑1/r
Sn= ∑(2r-1)/r= ∑2-1/r= 2n -∑1/r
So that Sn= 2n-Hn
Hence option (B) is correct.

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