MCQ
$\left(7^{-1}-8^{-1}\right)^{-1}-\left(3^{-1}-4^{-1}\right)^{-1}$ का मान बराबर है-
  • 44
  • B
    56
  • C
    68
  • D
    12

Answer

Correct option: A.
44
(a)

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