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Mathematics 11 Online
OpenStudy (anonymous):

If "a" is a factor of 34, and "b" is a factor of 42, then the product of "a" and "b" could NOT be which of the following? A. 8 B. 17 C. 84 D. 102 E. 238

hartnn (hartnn):

since 34 and 42 have only one factor of 2 each,the product cannot have 2*2*2 that is the product cannot be 8,as it has 3 '2's

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