The answer would be 11
The factors of 55 include 1,5,11,55
The factors of 77 include 1,7,11,77...
Therefore, making the Greatest Common Factor of 55 and 77, "11"
It is: 11
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The factors of 55 are:1, 5, 11, 55The factors of 77 are:1, 7, 11, 77The common factors are:1, 11The Greatest Common Factor (GCF) is:11
It is: 11
Since 37 is a prime number, the GCF is 1
The greatest common factor of the numbers 55, 77 and 143 is 11.Common factors of 55: 1, 5, 11, and 55.Common factors of 77: 1, 7, 11, and 77.Common factors of 143: 1, 11, 13, and 143.So the greatest common factor is 11.
The GCF is 11.