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    Question

    What approximate value

    will replace the question mark (?) in the following? √484.01 + √? – ³√1000.99 = √400.08
    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

    √484.01 + √? – ³√1000.99 = √400.08 √484 + √? – ³√1001 ~ √400 22 + √? – 10 ~ 20 √? ~ 8 ? ~ 64

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