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Something Beyond Reach

Calculus Level 4

\[\displaystyle \lim_{n \to \infty}\sum^{n}_{r=0} \bigg (\frac{1}{4r+1}-\frac{1}{4r+3} \bigg ) = \ ? \]

Refer to my set Some JEE problems or see this problem

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Excel in math and science

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by Tanishq Varshney

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