The Greatest Common Factor of 28, 42, 63: 7
The greatest common factor of the numbers 28, 35 and 63 is 7.
7
The GCF is 7.
The GCF is 7.
The GCF is 1.
The GCF is 7.
7 is a factor of 28 because 4 x 7 equals 28. 7 is a factor of 63 because 9 x 7 = 63. That makes 7 a common factor of 28 and 63. The factors of 28 that are larger than 7 are 14 and 28. The factors of 63 that are larger than 7 are 9, 21 and 63. Since none of those numbers are the same, that makes 7 the greatest common factor of 28 and 63.
7(4 - 9)
The greatest common factor of 3 and 63 is 3.
The greatest common factor of 63 and 104 is 1.
The greatest common factor of 63 and 200 is 1.