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To find the greatest common factor (GCF) of 180, 450, and 420, we first need to find the prime factorization of each number. The prime factorization of 180 is 2^2 x 3^2 x 5, the prime factorization of 450 is 2 x 3^2 x 5^2, and the prime factorization of 420 is 2^2 x 3 x 5 x 7. The GCF is the product of the common prime factors raised to the lowest power, which in this case is 2^2 x 3 = 12. Therefore, the greatest common factor of 180, 450, and 420 is 12.

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More answers

140 = 2 * 2 * 5 * 7

180 = 2 * 2 * 3 * 3 * 5

Greatest common factor: 2 * 2 * 5 = 20

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Wiki User

8y ago
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The GCF of 180 and 420 is 60.

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Wiki User

15y ago
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The Greatest Common Factor (GCF) is: 210

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Wiki User

14y ago
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The GCF is 30.

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Wiki User

12y ago
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90

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Wiki User

7y ago
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Q: What is the greatest common factor of 180 450 and 420?
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