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Verified Answer :

Sr155772

20: 1,2,4,5,10,20
28: 1,2,4,7,14,28

jasminerosecollins54

Answer:

4

Step-by-step explanation:

The factors of 20 are: 1, 2, 4, 5, 10, 20

The factors of 28 are: 1, 2, 4, 7, 14, 28

Then the greatest common factor is 4.

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