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The factors of 126 are:

1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126

The factors of 156 are:

1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156

The factors of 212 are:

1, 2, 4, 53, 106, 212

The common factors are:

1, 2

The Greatest Common Factor (GCF) is:

2

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βˆ™ 12y ago
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βˆ™ 14y ago

You need at least two different numbers in order to have a greatest common factor between them.

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βˆ™ 9y ago

Since 63 is a factor of 126, it is automatically the GCF.

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βˆ™ 10y ago

The Greatest Common Factor of 126, 180 is 18

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βˆ™ 12y ago

You need two or more numbers to find a GCF.

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βˆ™ 14y ago

The GCF is: 18

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βˆ™ 12y ago

The GCF is 42.

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βˆ™ 11y ago

The GCF is 18.

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βˆ™ 8y ago

It is: 27

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Q: What is the GCF of 63 and 126?
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