यदि $\lim _{n \rightarrow \infty} \frac{1-(10)^n}{1+(10)^{n+1}}=\frac{-\alpha}{10}$ है,तो $\alpha$ का मान ज्ञात कीजिए।

  • A
    $0$
  • B
    $-1$
  • C
    $1$
  • D
    $2$

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