જો $\log_{10} 2 = 0.3010$ હોય,તો $\log_{10}(1/2) =$

  • A
    $-0.3010$
  • B
    $0.6990$
  • C
    $1.6990$
  • D
    $-0.6990$

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જો $\log _{2}\left(3^{2 x-2}+7\right)=2+\log _{2}\left(3^{x-1}+1\right)$ હોય,તો $x=$

$7 \log \frac{16}{15} + 5 \log \frac{25}{24} + 3 \log \frac{81}{80} =$

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