Question

    What approximate value should come in place of the question-mark (?) in the following question (You are not expected to calculate the exact value).

    (91.004)2 - (40.003)2 - (52.9)2 = ?

    A 3558 Correct Answer Incorrect Answer
    B 3555 Correct Answer Incorrect Answer
    C 3785 Correct Answer Incorrect Answer
    D 3872 Correct Answer Incorrect Answer
    E 3789 Correct Answer Incorrect Answer

    Solution

    (91.004)2 - (40.003)2 - (52.9)2 = ?  (91)2 - (40)2 - (53)2 = ? 8281 - 1600 - 2809 = ?  ?  = 3872

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