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).

    (98.999)2 - (9.9)2 -

    (14.9)2 = ?
    A 9386 Correct Answer Incorrect Answer
    B 9476 Correct Answer Incorrect Answer
    C 9686 Correct Answer Incorrect Answer
    D 9586 Correct Answer Incorrect Answer
    E 9286 Correct Answer Incorrect Answer

    Solution

    (98.999)2 - (9.9)2 - (14.9)2 = ? ? = 992 - 102 - 152  ? = 9801 - 100 - 225 ? = 9476

    Practice Next