which of the following numbers of factor of both 5 and 10
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The gcf of 5 and 10 can be obtained like this:
The factors of 5 are 5, 1.
The factors of 10 are 10, 5, 2, 1.
The common factors of 5 and 10 are 5, 1, intersecting the two sets above.
In the intersection factors of 5 ∩ factors of 10 the greatest element is 5.
Therefore, the greatest common factor of 5 and 10 is 5.
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