જો $\log _{10}\left[98+\sqrt{x^{2}-12 x+36}\right]=2$ હોય,તો $x=$

  • A
    $4$
  • B
    $8$
  • C
    $12$
  • D
    $4, 8$

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

જો $y = \frac{1}{a^{1-\log _{a} x}}$,$z = \frac{1}{a^{1-\log _{a} y}}$ અને $x = a^{k}$ હોય,તો $k =$

જો $\log _{4} x+\log _{8} x=5$ 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 $(4.2)^{x} = (0.42)^{y} = 100$ હોય,તો $\frac{1}{x} - \frac{1}{y} = $

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