A factor is a divisor - a number that will evenly divide into another number. One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 63 are 1, 3, 7, 9, 21, and 63. The common factors are 1, 3, 7, and 21.
7 is the greatest common factor of 4942 and 21, or of 49, 42 and 21, if that is what you meant.
The GCF is 21.
21
The GCF (greatest common factor) would be 21.
The Greats Common Factor (GCF) is 21 63: 1,3,7,9,21,63 42: 1,2,3,67,14,21,42 21: 1,3,7,21 They all number 21 listed in there the Factors
The common factors of 21 and 42 are 3, 7 and 21. The greatest common factor (GCF) is 21.
Everything except 1, 3, 7 and 21.
Since 21 is a factor of 42, it is automatically the GCF.
21 itself is the greatest common integral factor, since 21 X 2 = 42.
A factor is a divisor - a number that will evenly divide into another number. One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 63 are 1, 3, 7, 9, 21, and 63. The common factors are 1, 3, 7, and 21.
21 is.
A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that both numbers have in common.One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42.The factors of 105 are 1, 3, 5, 7, 15, 21, 35, and 105.The common factors are 1, 3, 7, and 21. Therefore, the greatest common factor is 21.The GCF of 42 and 105 is 21
42 * * * * * 42 is a common MULTIPLE, not a common factor. The two common factors are 1 and 7.
The highest common factor is 21
The GCF is 21.
The gcf is 21