यदि $\mathop {\lim }\limits_{x \to 2} \frac{{{x^n} - {2^n}}}{{x - 2}} = 80$,जहाँ $n$ एक धनात्मक पूर्णांक है,तो $n = $

  • A
    $3$
  • B
    $5$
  • C
    $2$
  • D
    इनमें से कोई नहीं

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