જો $(4.2)^{x} = (0.42)^{y} = 100$ હોય,તો $\frac{1}{x} - \frac{1}{y} = $

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

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

$2 \log _{10} 5 + \log _{10} 8 - \frac{1}{2} \log _{10} 4 = ?$

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

જો $\log 2=x, \log 3=y$ અને $\log 7=z$ હોય,તો $\log (4 \sqrt[3]{63})$ ની કિંમત શોધો.

જો $x = \log_{4/3}(1/2)$ અને $y = \log_{1/2}(1/3)$ હોય,તો

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