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The product of two numbers is 180. The LCM of the two numbers is 60. What is the GCF of the two numbers? How do you know?

  • math -

    nice question

    the possible 2 numbers were
    1 180
    2 90
    3 60
    4 45
    5 36
    6 30
    9 20
    12 15

    of those only the 3 60 pair has a LCM of 60
    the GCF of the pair is 3

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