6th Class Mathematics Factors and Multiples Question Bank Factors & Multiples

  • question_answer If n is a natural number, then \[{{9}^{2n}}-{{4}^{2n}};\] is divisible by

    A)  5                                

    B)  13            

    C)  both 5 and 13            

    D)  None of these

    Correct Answer: C

    Solution :

    \[{{9}^{2n}}-{{4}^{2n}}\]is divisible by \[9-4=5\] & \[9+4=13\]

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