Question

    The mean proportional of 4 and 25 is

    _____.
    A 16 Correct Answer Incorrect Answer
    B 6 Correct Answer Incorrect Answer
    C 4 Correct Answer Incorrect Answer
    D 10 Correct Answer Incorrect Answer

    Solution

    We know that, Mean proportion of 'a' and 'b' = √(a × b)
    So, Mean proportion = √(4 × 25) = √100 = 10

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