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    Question

    (24.98)2 = ?2 +

    (14.99)2 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.)
    A 42 Correct Answer Incorrect Answer
    B 29 Correct Answer Incorrect Answer
    C 56 Correct Answer Incorrect Answer
    D 20 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, (24.98)2 = ?2 + (14.99)2 252 ~ ?2 + 152 ?2 ~ 625– 225 ?2  ~ 400 ?~ √400 ? ~ 20

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