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------------------------------------------------ Which expression represents the greatest common factor (GCF) of 20 and 70?

A. 2 x 5
B. 2 x 7
C. 7 x 5
D. 2 x 2 x 5

Answer :

Answer:

A. 2 * 5

Step-by-step explanation:

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

The factors of 70 are: 1, 2, 5, 7, 10, 14, 35, 70

Then the greatest common factor is 10.

2 * 5 = 10

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