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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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