Convergent Series: Find Sequence of Positive Reals

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SUMMARY

The discussion focuses on finding a sequence of positive real numbers (an) such that the sum from 1 to infinity is convergent, while the ratio of the count of indices k where a(k+1) > ak to n approaches 1 as n approaches infinity. A suggested approach is to utilize a convergent decreasing series, specifically 1/2^n, and explore rearranging its terms to meet the specified conditions. This highlights the importance of creative problem-solving in mathematical sequences.

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Homework Statement



Find a sequence (an) of positive real numbers such the sum of an from 1 to infinity is convergent but the number of k such that a(k+1)>ak divided by n tends to 1 as n tends to infinity.

Homework Equations





The Attempt at a Solution


I don't have a clue how to find a sequence here. Could anyone please give a hint? Any help is appreciated!
 
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Be creative. Take a nice convergent decreasing series like 1/2^n. Now think about ways of rearranging the terms.
 

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