$\log _{10} \tan 40^{\circ} \cdot \log _{10} \tan 41^{\circ} \cdots \log _{10} \tan 50^{\circ} = ?$

  • A
    $1$
  • B
    $0$
  • C
    $-1$
  • D
    આમાંથી કોઈ નહીં

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જો $\frac{\log _{2} a}{2}=\frac{\log _{3} b}{3}=\frac{\log _{4} c}{4}$ અને $a^{1 / 2} \cdot b^{1 / 3} \cdot c^{1 / 4}=24$ હોય,તો:

જો $\log _{a}(a b)=x$ હોય,તો $\log _{b}(a b)$ શું થાય?

$\frac{3+\log _{10} 343}{2+\frac{1}{2} \log _{10} \left(\frac{49}{4}\right)+\frac{1}{3} \log _{10} \left(\frac{1}{125}\right)}=$

જો $\log (x+y) = \log \left( \frac{3x - 3y}{2} \right)$ હોય,તો $\log x - \log y =$

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

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