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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.) (?² + √15.9) ÷ 4.98 = 12.89 X 3.97
    A 16 Correct Answer Incorrect Answer
    B 25 Correct Answer Incorrect Answer
    C 39 Correct Answer Incorrect Answer
    D 55 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    (?² + √15.9) ÷ 4.98 = 12.89 X 3.97

    (?² + √16) ÷ 5 ~ 13 X 4

    (?² + 4) ÷ 5 ~ 52

    ? ² + 4 ~ 260

    ? ² ~ 256

    ? ~ ±16

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