Problem 51 (difficulty: 4/10)

Prove that

\(\displaystyle 1+\frac{1}{2\cdot \sqrt 2} +\ldots + \frac{1}{n\cdot \sqrt n } \le 3- \frac{2}{\sqrt n}. \)

Give me another random problem!

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Request for a concrete problem:I want problem no.

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