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      Question

      The mean proportional of 8 and 50 is

      _____.
      A 16 Correct Answer Incorrect Answer
      B 20 Correct Answer Incorrect Answer
      C 26 Correct Answer Incorrect Answer
      D 14 Correct Answer Incorrect Answer

      Solution

      We know that, Mean proportion of 'a' and 'b' = тИЪ(a ├Ч b)
      So, Mean proportion = тИЪ(8 ├Ч 50) = тИЪ400 = 20

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