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    • Question

      The average of 4 distinct prime numbers a, b, c, d is

      35, where a ˂ b ˂ c ˂d. a and d are equidistant from 36 and b and c are equidistant from 34 and a, b are equidistant from 30 and c and d are equidistant from 40. The difference between a and d is
      A 30 Correct Answer Incorrect Answer
      B 14 Correct Answer Incorrect Answer
      C 21 Correct Answer Incorrect Answer
      D Cannot be determined Correct Answer Incorrect Answer

      Solution

      The correct answer is B

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