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      Question

      (64/25)? ×  (125/512) ? - 1  =

      5/8
      A 2 Correct Answer Incorrect Answer
      B 8 Correct Answer Incorrect Answer
      C 4 Correct Answer Incorrect Answer
      D 3 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ⇒   (8/5)2x  × (5/8) 3x - 3   = 5/8 ⇒   (5/8) -2x  × (5/8) 3x - 3   = 5/8 ⇒   (5/8) -2x + 3x - 3 = 5/8 ⇒   (5/8) x - 3  = 5/8 ⇒   x - 3 = 1 ⇒   x = 4 

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