$\sum\limits_{n = 1}^\infty {\frac{{^n{C_0} + ... + ^n{C_n}}}{{^n{P_n}}}} $ का मान क्या है?

  • A
    $e^2$
  • B
    $e$
  • C
    $e^2 - 1$
  • D
    $e - 1$

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Similar Questions

$\sum_{r=2}^{\infty} \frac{1+2+\dots+(r-1)}{r !}$ का मान ज्ञात कीजिए:

$1 + \frac{1}{3!} + \frac{1}{5!} + \frac{1}{7!} + \dots \infty = $

$1 + \frac{2}{3!} + \frac{3}{5!} + \frac{4}{7!} + \dots \infty = \,$

$a>0, x \in R$ के लिए व्यंजक $\begin{aligned} & 1+x \log _e a+\frac{x^2}{2 !}\left(\log _e a\right)^2+\frac{x^3}{3 !}\left(\log _e a\right)^3+\ldots \end{aligned}$ किसके बराबर है?

$(e^x - 1)(e^{-x} + 1)$ के विस्तार में,$x^3$ का गुणांक है

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