જો $\log (x-y) - \log 5 - \frac{1}{2} \log x - \frac{1}{2} \log y = 0$ હોય,તો $\frac{x}{y} + \frac{y}{x}$ ની કિંમત શોધો.

  • A
    $25$
  • B
    $26$
  • C
    $27$
  • D
    $28$

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જો $\frac{1}{\log _{x} 10}=\frac{2}{\log _{a} 10}-2$ હોય,તો $x=$

જો $\log 2 = 0.3010$ અને $\log 3 = 0.4771$ હોય,તો $\log _{5} 512$ ની કિંમત શોધો.

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

જો $\log _{10}\left[98+\sqrt{x^{2}-12 x+36}\right]=2$ હોય,તો $x=$

જો $\log _{10} 5 + \log _{10}(5x + 1) = \log _{10}(x + 5) + 1$ હોય,તો $x$ ની કિંમત શોધો.

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