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SSC Sample Paper SSC CGL - Sample Paper-17

  • question_answer
    The HCF and product of two numbers are 15 and 6300 respectively. The number of possible pairs of the numbers is

    A) 4                                 

    B) 3       

    C) 2         

    D) 1

    Correct Answer: C

    Solution :

    Let the number be 15x and 15y where x and y are co-prime. \[\therefore \]      \[15x\times 15y=6300\] \[\Rightarrow \]   \[xy=\frac{6300}{15\times 15}=28\] \[\therefore \] Possible pairs = (4, 7) (1, 28)           


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