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To find the highest common factor (HCF) of 28 and 56, we need to list all the factors of both numbers and find the greatest factor that they have in common. The factors of 28 are: 1, 2, 4, 7, 14, and 28. The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, and 56. From these lists, we can see that the commRead more

To find the highest common factor (HCF) of 28 and 56, we need to list all the factors of both numbers and find the greatest factor that they have in common.

The factors of 28 are: 1, 2, 4, 7, 14, and 28. The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, and 56.

From these lists, we can see that the common factors are 1, 2, 4, 7, 14, and 28. The greatest of these common factors is 28, so the highest common factor of 28 and 56 is 28.

Therefore, the HCF of 28 and 56 is 28.

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