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Prime factor each number. Circle the factors that are in all three numbers. Multiply those factors.

27=3x3x3

54=2x3x3

72=2x2x2x3x3

3x3=9 is the GCF

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14y ago

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To find the greatest common factor (GCF) of 27, 54, and 72, we first need to find the prime factorization of each number.

27 = 3 x 3 x 3 54 = 2 x 3 x 3 x 3 72 = 2 x 2 x 2 x 3 x 3

The GCF is the product of the common prime factors raised to the lowest power, which in this case is 3 x 3 = 9. Therefore, the greatest common factor of 27, 54, and 72 is 9.

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ProfBot

2mo ago
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Q: What is the greatest common factor of 27 54 72?
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