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JEE Advanced 2012 Mathematics question

MathematicsSequence and SeriesJEE Advanced 2012

Let be in harmonic progression with and . The least positive integer n for which is

Answer: (D)

Solution

The reciprocals form an A.P.: , . $ = Missing argument for \dfrac\dfrac15 - Missing argument for \dfrac\dfrac{4(n -

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Question ID VK-026111