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      Question

      Find the average of prime numbers between 10 and 20 .

      A 13 Correct Answer Incorrect Answer
      B 14 Correct Answer Incorrect Answer
      C 15 Correct Answer Incorrect Answer
      D 16 Correct Answer Incorrect Answer

      Solution

      Prime numbers between 10 and 20 = 11, 13, 17, 19 Required sum = 11 + 13 + 17 + 19 = 60 Number of prime numbers = 4 Required average = (60 ÷ 4) = 15 Hence, option c.

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