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The g. c. f. of 21 and 84 is 21.

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Q: Greatest common factors of 21 and 84?
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What is the greatest common factor for 84 105 and 147?

To find the greatest common factor (GCF) of 84, 105, and 147, you need to identify the common factors of these numbers. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The factors of 105 are 1, 3, 5, 7, 15, 21, 35, and 105. The factors of 147 are 1, 3, 7, 21, 49, and 147. The greatest common factor among these three numbers is 21.


What are the factors and greatest common factor of 84?

The factors of 84 are 1,2,3,4,6,7,12,14,21,28,42 and 84. To find a greatest common factor, you need to compare them to another number's factors.


What are all the common factors of 84 and 105 and the GCF of each pair?

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


What is the greatest common factor of 49 84 and 98?

Factors of 49 are 1, 7, and 49.Factors of 84 are 1, 2, 3, 4, 7, 12, 21, 28, 42, and 84.Factors of 98 are 1, 2, 7, 14, 49, and 98.Their greatest common factor is 7.


What is the greatest common factor of 42 72 and 84?

To find the greatest common factor (GCF) of 42, 72, and 84, you first need to find the factors of each number. The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42. The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The GCF of 42, 72, and 84 is the largest number that appears in the factors of all three numbers, which in this case is 6.

Related questions

What are the greastest common factors of 21 and 84?

The greatest common factor of the numbers 21 and 84 is 21.


What are the common factors and greatest common factor of 21 and 84?

Since 21 is a factor of 84, it is automatically the GCF and all of its factors are common.


What are the greatest common factors for 21 and 84?

Since 21 is a factor of 84, it is automatically the GCF.


What is the greatest common factors of 84 and 105?

The GCF of 84 and 105 is 21.The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, and 84.The factors of 105 are 1, 3, 5, 7, 15, 21, 35, and 105.The greatest number they have in common (Hint hint, greatest common factor) is 21.


What are the greatest common factors between 63 and 84?

The GCF is 21.


What is the greatest common factor for 84 105 and 147?

To find the greatest common factor (GCF) of 84, 105, and 147, you need to identify the common factors of these numbers. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The factors of 105 are 1, 3, 5, 7, 15, 21, 35, and 105. The factors of 147 are 1, 3, 7, 21, 49, and 147. The greatest common factor among these three numbers is 21.


What are the common factors of 21 42 and 84?

The common factors of 21 42 and 84 are 21


What is the greatest common factor of 21 63 and 84?

The Greatest Common Factor of 21, 63, 84: 21


What are common factors of 21 and 84?

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


What are the factors and greatest common factor of 84?

The factors of 84 are 1,2,3,4,6,7,12,14,21,28,42 and 84. To find a greatest common factor, you need to compare them to another number's factors.


Greatest common factor of 63 84 and 105?

The greatest common factor of 63, 84, and 105 is 21.


What is the greatest common factor of 63and 84?

The greatest common factor of 63 , 84 = 21