$\frac{1}{1 \cdot 2} - \frac{1}{2 \cdot 3} + \frac{1}{3 \cdot 4} - \frac{1}{4 \cdot 5} + \dots \infty = $

  • A
    ${\log_e} \frac{4}{e}$
  • B
    ${\log_e} \frac{e}{4}$
  • C
    ${\log_e} 4$
  • D
    ${\log_e} 2$

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શ્રેણી $\frac{1}{1 \times 2} - \frac{1}{2 \times 3} + \frac{1}{3 \times 4} - \dots \infty$ નો સરવાળો કેટલો થાય?

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