यदि $\frac{\log x}{l+m-2n} = \frac{\log y}{m+n-2l} = \frac{\log z}{n+l-2m}$ है,तो $x^2 y^2 z^2$ का मान ज्ञात कीजिए।

  • A
    $2$
  • B
    $-1$
  • C
    $4$
  • D
    $1$

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यदि $\log _{e} 2 \cdot \log _{b} 625 = \log _{10} 16 \cdot \log _{e} 10$ है,तो $b =$

$5^{\sqrt{\log _{5} 7}} - 7^{\sqrt{\log _{7} 5}}$

यदि $\log _{10} 2 = 0.3010$ और $\log _{10} 7 = 0.8451$ है,तो $\log _{10} 2.8$ का मान ज्ञात कीजिए।

यदि $y = \frac{1}{a^{1-\log _{a} x}}$,$z = \frac{1}{a^{1-\log _{a} y}}$ और $x = a^{k}$ है,तो $k =$

यदि $a^{x}=b^{y}=c^{z}=d^{w}$ है,तो $\log _{a}(b c d)=$

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