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      Question

      What approximate value

      will replace the question mark (?) in the following? 19.99 × 20.01 – 15.01 × 14.99 = ?
      A 136 Correct Answer Incorrect Answer
      B 195 Correct Answer Incorrect Answer
      C 175 Correct Answer Incorrect Answer
      D 149 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      19.99 × 20.01 – 15.01 × 14.99 = ? 20 × 20 – 15 × 15 ~ ? ? ~ 400 – 225 ? ~ 175

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