Question

    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" alt="" />
    A 20 Correct Answer Incorrect Answer
    B 18 Correct Answer Incorrect Answer
    C 21 Correct Answer Incorrect Answer
    D 25 Correct Answer Incorrect Answer

    Solution

    Therefore, the required value = 5² - 2² = 25 − 4 = 21.

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