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      Question

      The smallest value of n, for which 2n + 1, is not a

      prime number, is
      A 3 Correct Answer Incorrect Answer
      B 4 Correct Answer Incorrect Answer
      C 5 Correct Answer Incorrect Answer
      D None of these Correct Answer Incorrect Answer

      Solution

      According to the option-

      take the value of n=4

      2n+1=2Γ—4+1=9

      9 is not a prime number.

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