यदि $(4.2)^{x} = (0.42)^{y} = 100$ है,तो $\frac{1}{x} - \frac{1}{y} = $

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

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Similar Questions

यदि $\log _{10} 50+\log _{10} 20=x$ है,तो $x$ का मान क्या होगा?

यदि $\log x : 3 = \log y : 4 = \log z : 5$ है,तो $zx =$

यदि $\log _{30} 3=a$ और $\log _{30} 5=b$ है,तो $\log _{30} 8$ का मान ज्ञात कीजिए।

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

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

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