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Common factors of 21 and 27 are: 1 and 3.

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12y ago

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Related Questions

What are the highest common factors of 21and 27?

The GCF is 3.


What are the Greatest common factors of 27 and 48?

the greatest common factor of 27 and 48 is 3.


What are the greatest common factors of 27 and 33?

The greatest common factor of 27 and 33 is 3.


What is the greatest common factors of 27 and 35?

The greatest common factor of 27 and 35 is 1


What are the common factors and greatest common factor of factor of 27?

Short answer: There are none. There is neither a greatest common factor nor common factors of a single number, such as 27, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. Examples: The common factors of 27 and 29 are only 1; the greatest common factor is 1. The common factors of 27 and 33 are 1 and 3; the greatest common factor is 3. The common factors of 27 and 45 are 1, 3, and 9; the greatest common factor is 9. The common factors of 27 and 81 are 1, 3, 9, and 27; the greatest common factor is 27.


What are the greatest common factors of 6 and 27?

The greatest common factor (GCF) is 3.


What are the greatest common factors of 27 and 34?

The Greatest Common Factor / GCF = 1


What are the common factors and greatest common factor of 27?

Short answer: There are none. There is neither a greatest common factor nor common factors of a single number, such as 27, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. Examples: The common factors of 27 and 33 are 1 and 3; the greatest common factor is 3. The common factors of 27 and 45 are 1, 3, and 9; the greatest common factor is 9. The common factors of 27 and 29 are only 1; the greatest common factor is 1.


What are the greatest common factors of 27 and 30?

3


What are the common factors and greatest common factor of 72 and 27?

1,3,9 are the common factors, and 9 is the GCF.


What is the greatest common factor of 27 and 72?

The greatest common factor (GCF) of 27 and 72 is 9. The common factors of 27 and 72 are 1, 3, and 9. Methods: 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 27 are 1, 3, 9, and 27. The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72. The common factors are 1, 3, and 9. Therefore, the greatest common factor is 9. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 27 are 3, 3, and 3. The prime factors of 72 are 2, 2, 2, 3, and 3. The prime factors in common are 3 and 3, so the greatest common factor is 3 x 3 = 9.


What the greatest common factor for 9 and 27?

the factors of 9 are 1, 3, and 9 The factors of 27 are 1, 3, 9, and 27. The largest factor they have in common (the largest/greatest common factor) is thus 9