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

  • A
    $\log 2$
  • B
    $\log 3$
  • C
    $\log 5$
  • D
    આમાંથી કોઈ નહીં

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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.

જો $a^{x}=b^{y}=c^{z}=d^{w}$ હોય,તો $\log _{a}(b c d)=$

$\log _{2} 16$ ની કિંમત શોધો.

જો $\log _{10} 50+\log _{10} 20=x$ હોય,તો $x$ ની કિંમત કેટલી થાય?

જો $\log _{2} x+\log _{4} x+\log _{16} x=21 / 4$ હોય,તો $x=$

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