The common factors of 21 and 42 are the numbers that divide both 21 and 42 without leaving a remainder. The factors of 21 are 1, 3, 7, and 21, while the factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The common factors of 21 and 42 are 1, 3, 7, and 21.
The common factors of 21 42 and 84 are 21
1, 3, 7, 21 1, 2, 3, 6, 7, 14, 21, 42
The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The composite factors from this list are 6, 14, 21, and 42.
The factors of 21 are: 1, 3, 7, 21.The factors of 42 are: 1, 2, 3, 6, 7, 14, 21, 42.The common factors are: 1, 3, 7, 21
The composite factors of 42 are: 6, 14, 21, 42.
The common factors of 21, 42, and 56 are: 1 and 7
1, 3, 7, and 21 are all common factors of 21 and 42.
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21 is a factor of both 21 and 42.
Factors of 21: 1, 3, 7, 21 Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42 GCF (21, 42) = 21
The common factors of 21 and 42 are 3, 7 and 21. The greatest common factor (GCF) is 21.