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

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

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

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

જો $\log _{30} 3=a$ અને $\log _{30} 5=b$ હોય,તો $\log _{30} 8$ ની કિંમત શોધો.

જો $\frac{\log _{2} x}{3}=\frac{\log _{2} y}{4}=\frac{\log _{2} z}{5 k}$ અને $\frac{z}{x^{3} y^{4}}=1$ હોય,તો $k=$

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