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Mathematics 15 Online
OpenStudy (anonymous):

Which is a not a common factor for one hundred fifty and four hundred fifty? Choose one answer. a. twenty-five b. thirty c. forty-five d. seventy-five

OpenStudy (anonymous):

I guess you just divide 150 and 450 by all those numbers, and the number that gives an answer which isn't a whole number, that's the one :)

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