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    Question

    The mean proportional of 18 and 2 is

    _____.
    A 8 Correct Answer Incorrect Answer
    B 12 Correct Answer Incorrect Answer
    C 6 Correct Answer Incorrect Answer
    D 4 Correct Answer Incorrect Answer

    Solution

    We know that, Mean proportion of 'a' and 'b' = тИЪ(a ├Ч b)
    So, Mean proportion = тИЪ(18 ├Ч 2) = тИЪ36 = 6

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