$\mathop {\lim }\limits_{n \to \infty } {\left( {\frac{{\left( {n + 1} \right)\left( {n + 2} \right) \ldots \left( {3n} \right)}}{{{n^{2n}}}}} \right)^{\frac{1}{n}}} = $

  • A
    $\frac{9}{{{e^2}}}$
  • B
    $3\log 3 - 2$
  • C
    $\frac{{18}}{{{e^4}}}$
  • D
    $\frac{{27}}{{{e^2}}}$

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Similar Questions

$\underset{n\to \infty }{\mathop{\lim }}\,\frac{{{1}^{99}}+{{2}^{99}}+{{3}^{99}}+......{{n}^{99}}}{{{n}^{100}}}=$

Difficult
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$\lim _{n \rightarrow \infty}\left\{\frac{1}{\sqrt{4 n^2-1^2}}+\frac{1}{\sqrt{4 n^2-2^2}}+\frac{1}{\sqrt{4 n^2-3^2}}+\dots+\frac{1}{\sqrt{4 n^2-n^2}}\right\}=$

$\mathop {\lim }\limits_{n \to \infty } \left[ {\frac{n}{{1 + {n^2}}} + \frac{n}{{4 + {n^2}}} + \frac{n}{{9 + {n^2}}} + .... + \frac{1}{{2n}}} \right]$ का मान क्या है?

Difficult
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मान लीजिए $S_n = \sum_{k=1}^n \frac{n}{n^2+kn+k^2}$ और $T_n = \sum_{k=0}^{n-1} \frac{n}{n^2+kn+k^2}$ जहाँ $n=1, 2, 3, \ldots$ है। तो,

$\lim _{n \rightarrow \infty}\left[\frac{1^k+2^k+3^k+\ldots+n^k}{n^{k+1}}\right]=$

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