$\frac{1}{\sqrt{11 - 2\sqrt{30}}} - \frac{3}{\sqrt{7 - 2\sqrt{10}}} - \frac{4}{\sqrt{8 + 4\sqrt{3}}} = $

  • A
    $0$
  • B
    $-1$
  • C
    $1$
  • D
    इनमें से कोई नहीं

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