The common factors of 42 and 77 are: 1 and 7
The greatest common factor of 42, 77 and 84 is 7.
Common factors of 77 and 385 are: 1, 7, 11, and 77.
Common factors of 49 and 77 are: 1 and 7.
7
the answer is 7
There is not a greatest common factor of a single number, such as 77, because there cannot be a greatest common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. The factors of 77 are 1, 7, 11, and 77. The prime factors of 77 are 7 and 11. Examples: The greatest common factor of 63 and 77 is 7. The greatest common factor of 74 and 77 is 1. The greatest common factor of 77 and 121 is 11.
1 and 7 (42=6*7 & 77=11*7)
The GCF is 7.
Factors of 126: 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126.Factors of 77: 1, 7, 11, 77.GCF (126, 77) = 7
The factors of 33 include 1,3,11,33The factors of 55 include 1,5,11,55The factors of 77 include 1,7,11,77Therefore the greatest common factor of 33, 55 and 77 is 11.
The GCF is 7.