प्रत्येक धनात्मक पूर्णांक $n$ के लिए,$f_n(x) = \min\left(\frac{x^n}{n!}, \frac{(1-x)^n}{n!}\right)$ परिभाषित करें,जहाँ $0 \leq x \leq 1$ है। मान लीजिए $I_n = \int_{0}^{1} f_n(x) dx, n \geq 1$ है। तो,$\sum_{n=1}^{\infty} I_n$ का मान ज्ञात कीजिए।

  • A
    $2\sqrt{e} - 3$
  • B
    $2\sqrt{e} - 2$
  • C
    $2\sqrt{e} - 1$
  • D
    $2\sqrt{e}$

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