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Mathematics 18 Online
OpenStudy (anonymous):

Find the greatest common factor of 30 and 60. A. 6 B. 15 C. 30 D. 60

OpenStudy (anonymous):

factors have to be smaller than or equal to the numbers so it can't be 60, because 60 isn't a factor of 30 - its larger

OpenStudy (anonymous):

so if 6, 15, and 30 are all factors of both 30 & 60 the GCF would have to be 30

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