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To find the highest common factor of 55, 77, and 143, you need to determine the factors of each number. The factors of 55 are 1, 5, 11, and 55. The factors of 77 are 1, 7, 11, and 77. The factors of 143 are 1, 11, 13, and 143. The highest common factor among the three numbers is 11, as it is the largest factor that they all share.

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More answers

The GCF is 11.

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Wiki User

8y ago
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It is: 11

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Wiki User

8y ago
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It is: 11

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Wiki User

8y ago
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Q: What is the highest common facator of 55 77 and 143?
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