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One way to determine the greatest common factor is to find all the factors of the numbers and compare them.

The factors of 132 are 1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, and 132.

The factors of 220 are 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, and 220

The common factors are 1, 2, 4, 11, 22, and 44. Therefore, the greatest common factor is 44.

The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.

The prime factors of 132 are 2, 2, 3, and 11.

The prime factors of 220 are 2, 2, 5, and 11.

The prime factors in common are 2, 2, and 11, so the greatest common factor is 2 x 2 x 11 = 44.
The GCF of 132, 220 is 44.

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9y ago

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