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# What is the greatest common factor of 8 and 20?

Updated: 4/28/2022 Wiki User

5y ago

The GCF of 8 and 20 is 4

8 = 2 x 2 x 2

20 = 2 x 2 x 5

There are 2 twos in each so 2 x 2 = 4

The GCF is 4.

Another explanation:

The factors of 8 are 1, 2, 4, and 8.

The factors of 20 are 1, 2, 4, 5, 10, and 20.

The common factors are 1, 2, and 4. Therefore, the greatest common factor is 4.
The GCF is 4. Wiki User

5y ago   Wiki User

11y ago

Factors of 8: 1,2,4,8

Factors of 20: 1,2,4,5,10,20

The GCF is 4.   Wiki User

10y ago
• Factors of 8: 1, 2, 4, 8
• Factors of 20: 1, 2, 4, 5, 10, 20
• GCF (8, 20) = 4   Wiki User

11y ago

The GCF is 4.   Wiki User

7y ago

The GCF is 4.   Wiki User

7y ago

The greatest common FACTOR is 4.   Earn +20 pts
Q: What is the greatest common factor of 8 and 20?
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