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Q: What are the greatest common factors of 21 and 40?
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Why is 1 the greatest common factor of 21 and 40?

The greatest common factor of 21 and 40 is 1 because there are no larger common factors.


What is the greatest common factor of 40 and 21?

The GCF of 21 and 40 is 1, One way to determine the greatest common factor is to find all the factors of the numbers and compare them. The factors of 21 are 1, 3, 7, and 21. The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40. The only common factor is 1. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. The prime factors of 21 are 3 and 7. The prime factors of 40 are 2, 2, 2, and 5 Therefore, the GCF is 1.


What are the greatest common factors to 40 and 125?

Common factors of 40 and 125 are: 1 and 5.


What are the common factors and the greatest common factors for 15 and 40?

The common factors are: 1, 5 The Greatest Common Factor (GCF) is: 5


What is the greatest common factor for 40?

There is not a greatest common factor of 40 because there cannot be a greatest common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40. The greatest common factor of 16 and 40 is 8. The greatest common factor of 40 and 55 is 5. The greatest common factor of 36, 40, and 96 is 4.


What are the greatest Common factors for 2 and 40?

The greatest common factor is two.


What are the greatest common factors for 40 125?

The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40 The factors of 125 are: 1, 5, 25, 125 The common factors are: 1, 5 The Greatest Common Factor: 5


What are all the greatest common factors of 36 and 40?

Common factors of 36 and 40 are: 1, 2, and 4.


What are the greatest common factors of 38 and 40?

The greatest common factor (GCF) is 2.


What are the greatest common factors of 20 30 40?

The greatest common factor is 10.


What are the greatest common factors to 16 40 and 88?

The greatest common factor is 4. Other common factors are 2 and 1.


What is the greatest common factors of 12 and 40?

1, 2, 4 are the common factors of 12 and 40, and 4 is the greatest common factor