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Please help me

Find the value of

\(\dfrac{3}{4}+\dfrac{3}{28}+\dfrac{3}{70}+\dfrac{3}{130}+...............+\dfrac{3}{9700}\)

Please give an easy method.

Fast.

Note by Sai Ram
1 year, 12 months ago

No vote yet
1 vote

  Easy Math Editor

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\(\frac{3}{4} + \frac{3}{28} + \frac{3}{70} + \frac{3}{130} + \ldots + \frac{3}{9700} \\ \frac{3}{1\times 4}+\frac{3} {4\times 7}+\frac{3}{7\times 10}+\frac{3}{10\times 13}+\ldots+\frac{3}{97\times 100} \\ \left(1-\frac{1} {4}\right)+\left(\frac{1} {4}-\frac{1}{7}\right)+\left(\frac{1}{7}-\frac{1} {10}\right)+\ldots+\left(\frac{1}{97}-\frac{1} {100}\right) \\ 1-\frac{1} {100}=\frac{99} {100}=\boxed{0.99}\)

Akshat Sharda - 1 year, 12 months ago

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Yay to the Telescoping Series - Sum!

Calvin Lin Staff - 1 year, 12 months ago

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Sir, is there another easy way ?

Sai Ram - 1 year, 11 months ago

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Thank you very much.

Is there another way ?

Sai Ram - 1 year, 12 months ago

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