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The greatest common factor of 20 and 25 is 5:

The factors of 20 are 1, 2, 4, 5, 10 and 20.

The factors of 25 are 1, 5, and 25.

The common factors of 20 and 25 are therefore 1 and 5 (and 5 is, of course, the highest).

The HCF is: 5

Q: What is the greatest common factor of 20 and 25?

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The greatest common factor of 15, 20, and 25 is 5.

25 is not a multiple of 10, so the greatest common factor would not be 10. A lower common factor would be 5, because 10, 20 and 25 all divide by 5, so 5 is the greatest common factor of 10, 20 and 25.

The greatest common factor of 25 and 175 is 25.

The greatest common factor of 15, 20, and 25 is 5.The HCF (Highest Common Factor) of 15, 20, and 25, can be easily determined, since all of the values end in 0 or 5, therefore, each of them are divisible by 5. 15/5 = 3, 20/5 = 4, and 25/5 = 5, which 3 and 5 are prime. Therefore, 5 is the GCF (HCF) of 15, 20, and 25.

The greatest common factor of 25 and 34 is one.

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The greatest common factor of 15, 20, and 25 is 5.

The Greatest Common Factor of 105, 25, 20: 5

The Greatest Common Factor of 15, 20 and 25 is 5.

25 is not a multiple of 10, so the greatest common factor would not be 10. A lower common factor would be 5, because 10, 20 and 25 all divide by 5, so 5 is the greatest common factor of 10, 20 and 25.

The greatest common factor of 20, 21, and 25 is 1. Although 20 and 25 can be divisible by 5, 21 can not. Therefore, the only common factor between these three numbers is 1 and it's the greatest one as well.

The Greatest Common Factor of 40 and 250 is 10.

The GCF is 5.

It is: 5

The GCF is 5.

55Five.

The GCF is 5.

The greatest common factor of 25 and 100 is 25.