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SSC Sample Paper SSC CGL - Sample Paper-12

  • question_answer
    LCM of two numbers is 120 and their HCF is 10. Which of the following can be the sum of those two numbers?

    A) 140                              

    B) 80

    C) 60                                

    D) 70

    Correct Answer: D

    Solution :

    Let the numbers be 10x and 10y where x and y are prime I each other. \[\therefore \]      \[LCM=10xy\] \[\Rightarrow \]   \[10xy=120\] \[\Rightarrow \]   \[xy=12\] Possible pairs = (3, 4) or (1, 12) \[\therefore \] Sum of the numbers = 30 + 40 = 70


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