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      Question

      What approximate value

      will replace the question mark (?) in the following? 29.99 × 30.01 – 21.01 × 20.99 = ?
      A 336 Correct Answer Incorrect Answer
      B 459 Correct Answer Incorrect Answer
      C 375 Correct Answer Incorrect Answer
      D 349 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      29.99 × 30.01 – 21.01 × 20.99 = ? 30 × 30 – 21 × 21 ~ ? ? ~ 900 – 441 ? ~ 459

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