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    Question

    The mean proportional of 12 and 75 is

    _____.
    A 28 Correct Answer Incorrect Answer
    B 24 Correct Answer Incorrect Answer
    C 32 Correct Answer Incorrect Answer
    D 30 Correct Answer Incorrect Answer

    Solution

    We know that, Mean proportion of 'a' and 'b' = √(a Γ— b)
    So, Mean proportion = √(12 Γ— 75) = √900 = 30

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