Q: What are the common factors of 21 42 and 84?

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The common factors are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84

The composite factors of 84 are: 4, 6, 12, 14, 21, 28, 42, 84.

42, 84, 126 and so on.

The factors of 75 are: 1, 3, 5, 15, 25, 75 The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 The common factors are: 1, 3

84 has 12 factors: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84.

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Yes. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The common factors are 1, 2, 3, 6, 7, 14, 21, and 42. One of the common factors is 6.

The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 The factors of 126 are: 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126 The common factors are: 1, 2, 3, 6, 7, 14, 21, 42 The Greatest Common Factor: GCF = 42

The common factors are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84

The factors of 21 are: 1, 3, 7, 21.The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84.The common factors are: 1, 3, 7, 21

Since 21 is a factor of 84, all of its factors are common.

The common factors of 84 and 105 are: 1, 3, 7, and 21The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84.The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105.The common factors are: 1, 3, 7, 21

The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84. For them to be common, they need to be compared to another set of factors.

The factors of 82 are 1, 2, 41, and 82. The factors of 84 are 1, 2, 4, 6, 7, 12, 14, 21, 42, and 84. The factors they have in common are 1 and 2.

Excluding 1, they are : 2 , 3, 6, 14, 21, and 42. 42 = 2 x 3 x 7 84 = 2 x 2 x 3 x 7 the multiple factors are 2 x 7, 3 x 7, and 2 x 3 x 7 (which is 42).

LCM(21, 28, 42) = 84.

The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84. For them to be common, they need to be compared to another set of factors.

The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105 The common factors are: 1, 3, 7, 21 The Greatest Common Factor: GCF = 21