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    Question

    If the geometric mean of 4, 18,

    and (p + 4) is 12, what is the value of '0.4p'?
    A 5 Correct Answer Incorrect Answer
    B 4 Correct Answer Incorrect Answer
    C 9 Correct Answer Incorrect Answer
    D None of these Correct Answer Incorrect Answer

    Solution

    ATQ, So, required value = 20 × 0.4 = 8

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