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      Question

      ?² x

      >Γ— 8 - 320 = 513 What is the approximate value should come in place of question mark (?) in the following questions? (You are not needed to calculate the exact value)
      A 9 Correct Answer Incorrect Answer
      B 10 Correct Answer Incorrect Answer
      C 11 Correct Answer Incorrect Answer
      D 12 Correct Answer Incorrect Answer
      E 8 Correct Answer Incorrect Answer

      Solution

      ?² x 8 - 320 = 513 ?² x 8 =320 + 513 ?² x 8 = 833 ?² = 104.125 = Approx. 100 So ? = 10

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