શ્રેણી $\frac{1}{2!} + \frac{1}{4!} + \frac{1}{6!} + \dots \infty$ નો સરવાળો શોધો.

  • A
    $\left( \frac{e^2 - 1}{2} \right)$
  • B
    $\frac{(e - 1)^2}{2e}$
  • C
    $\frac{e^2 - 1}{2e}$
  • D
    $\frac{e^2 - 1}{e}$

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