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Railways R.R.C. (Guwahati) Solved Paper Held on 24-11-2013

  • question_answer
    The number of all prime numbers less than 20is?

    A) 6                                 

    B) 7

    C) 8                                 

    D) 10

    Correct Answer: C

    Solution :

    Number of all prime numbers below 20 = 2, 3, 5, 7, 11, 13, 17, 19


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