જો $\log _{2}\left(9^{x-1}+7\right)-\log _{2}\left(3^{x-1}+1\right)=2$ હોય,તો $x$ ની કિંમતો શોધો.

  • A
    $0, 2$
  • B
    $0, 1$
  • C
    $1, 4$
  • D
    $1, 2$

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જો $\frac{1}{2} \le \log_{0.1} x \le 2$ હોય,તો:

જો $a, b, c \neq 0$ અને $\{0, 1, 2, 3, \ldots, 9\}$ ગણના સભ્યો હોય, તો $\log _{10}\left(\frac{a+10 b+10^2 c}{10^{-4} a+10^{-3} b+10^{-2} c}\right)$ ની કિંમત કેટલી થાય?

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