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The factors of 12 are:

1, 2, 3, 4, 6, 12

The factors of 18 are:

1, 2, 3, 6, 9, 18

The factors of 24 are:

1, 2, 3, 4, 6, 8, 12, 24

The common factors are:

1, 2, 3, 6

The Greatest Common Factor:

GCF = 6

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9y ago

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Wiki User

12y ago

Write the numbers are products of their prime factors:

12 = 2*2*3

18 = 2*3*3

24 = 2*2*3*3

The factors that are common to all three numbers are 2 and 3 so the GCF = 2*3 = 6

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Q: How do you find the GCF of 12 18 and 24?
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