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19 December, 09:22

What is the GCF of 56 and 21

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  1. 19 December, 09:31
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    The greatest common factor (GCF) of 56 and 21 is: 7

    To find the common factors between them, you must only find the factors that go up to the lowest number which in this case would be 21.

    Factors of 21: 1, 3, 7, 21

    Factors of 56: 1, 2, 4, 7, 8, 14

    The common factors between the two numbers are 1 and 7. We are looking for the greatest common factor, which would be 7 since it is the highest.
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