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      Question

      If the geometric mean of 4, 18,

      and (p + 4) is 12, what is the value of '0.4p'?
      A 5 Correct Answer Incorrect Answer
      B 4 Correct Answer Incorrect Answer
      C 9 Correct Answer Incorrect Answer
      D None of these Correct Answer Incorrect Answer

      Solution

      ATQ, So, required value = 20 × 0.4 = 8

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