यदि ${\left( \frac{2}{3} \right)^{x + 2}} = {\left( \frac{3}{2} \right)^{2 - 2x}}$ हो,तो $x =$

  • A
    $1$
  • B
    $3$
  • C
    $4$
  • D
    $0$

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यदि $2^x = 4^y = 8^z$ और $xyz = 288$ है,तो $\frac{1}{2x} + \frac{1}{4y} + \frac{1}{8z} = $

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