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    Question

    What approximate value

    will replace the question mark (?) in the following? √576.9 + √? – ³√1330.2 = √484.4
    A 36 Correct Answer Incorrect Answer
    B 81 Correct Answer Incorrect Answer
    C 64 Correct Answer Incorrect Answer
    D 49 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    √576.9 + √? – ³√1330.2 = √484.4 √577 + √? – ³√1331 ~ √484 24 + √? – 11 ~ 22 √? ~ 9 ? ~ 81

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