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    Question

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

    √143.88 X 31.87 + √323.99 X 15.99 - 31.99 X √195 =

    ?
    A 112 Correct Answer Incorrect Answer
    B 224 Correct Answer Incorrect Answer
    C 168 Correct Answer Incorrect Answer
    D 128 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,
    √143.88 X 31.87 + √323.99 X 15.99 - 31.99 X √195 = ?

    √144 X 32 + √324 X 16 - 32 X √196 = ?

    12 X 32 + 18 X 16 - 32 X 14 = ?

    384 + 288 - 448 = ?

    ? = 224

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