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Aubrey Berg
English
19 December, 09:22
What is the GCF of 56 and 21
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Jonathon Rich
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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