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      Question

      Four numbers have been given, out of which three are

      alike in a certain way and one is different. Select the one that is different.
      A 157 Correct Answer Incorrect Answer
      B 293 Correct Answer Incorrect Answer
      C 221 Correct Answer Incorrect Answer
      D 347 Correct Answer Incorrect Answer

      Solution

      All are prime numbers except for 221 (which is divisible by 13 and 17).

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