$\lim _{n \rightarrow \infty} \frac{3 \cdot 2^{n+1}-4 \cdot 5^{n+1}}{5 \cdot 2^{n}+7 \cdot 5^{n}}$ का मान ज्ञात कीजिए।

  • A
    $\frac{3}{5}$
  • B
    $-\frac{4}{7}$
  • C
    $-\frac{20}{7}$
  • D
    $0$

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$\lim_{h \rightarrow 0} 2 \left\{ \frac{\sqrt{3} \sin (\frac{\pi}{6} + h) - \cos (\frac{\pi}{6} + h)}{\sqrt{3} h (\sqrt{3} \cos h - \sin h)} \right\}$ का मान है

$\mathop {\lim }\limits_{x \to a} f(x) \cdot g(x)$ का अस्तित्व है,यदि

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