4th Class Mathematics Factors and Multiples Question Bank Factors and Multiples

  • question_answer
    Which of the following is a pair of prime numbers whose sum is 9?

    A)  2, 7                

    B)    5, 4    

    C)  3, 6                

    D)    1, 8

    Correct Answer: A

    Solution :

    A number in all the pairs except that in option (A) is composite (4, 6 and 8). So, (2, 7) is a pair of prime numbers whose sum is 9.


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