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    Question

    The mean proportion of 289 and 144 is:

    A 186 Correct Answer Incorrect Answer
    B 246 Correct Answer Incorrect Answer
    C 204 Correct Answer Incorrect Answer
    D 144 Correct Answer Incorrect Answer

    Solution

    Mean proportion of 'a' and 'b' = тИЪ(ab)
    Mean proportion = тИЪ(289 X 144) = 17 X 12 = 204

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