Best Answer

-- The greatest factor of 21 is 21 .

-- The greatest factor of 12 is 12 .

-- 1, 2, and 3 are factors of both 21 and 12 .

-- The greatest common ('same for both') factor is 3 .

More answers

The greatest common factor of 25 and 12 is 1.

The greatest factor of any positive number is the number itself. The greatest common factor of 15 and 25 is 5.

The GCF is 1.

The GCF is 3.

1, 2, 3, 4, 6, 12

1, 3, 9, 27

There is only one and it is 1

3

Q: What are the greatest factors of 15 and 25?

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1 and 5, the GCF.

Factors of 15: 1, 3, 5, and 15Factors of 50: 1, 2, 5, 10, 25, and 50Factors of 75: 1, 3, 5, 15, 25, and 75Common factors: 1 and 5Greatest common factor: 5

The factors of 43 are: 1, 43 The factors of 75 are: 1, 3, 5, 15, 25, 75 The common factors are: 1 The Greatest Common Factor: 1

Factors of 15: 1, 3, 5, 15Factors of 75: 1, 3, 5, 15, 25, 75GCF (15, 75) = 15

The factors of 25 are:1, 5, 25The factors of 60 are:1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60The factors of 75 are:1, 3, 5, 15, 25, 75The Greatest Common Factor:GCF = 5

Related questions

factors of 15: 1, 3, 5, 15 factors of 25: 1, 5, 25 gcf would be 5.

The greatest common factor of 15 and 25 is: 5.The factors of 15 are 1, 3, 5, and 15.The factors of 25 are 1, 5, and 25.The GCF of 15 and 25 is 5.

5

Factoring: 25 = 5x5 and 15 = 5x3. So the factors of 25 and 5 and 5, and the factors of 15 are 3 and 5. The greatest common factor therefore is 5.

1 and 5, the GCF.

Factors of 15: 1, 3, 5, and 15Factors of 50: 1, 2, 5, 10, 25, and 50Factors of 75: 1, 3, 5, 15, 25, and 75Common factors: 1 and 5Greatest common factor: 5

12 (2x2x3)

The factors of 43 are: 1, 43 The factors of 75 are: 1, 3, 5, 15, 25, 75 The common factors are: 1 The Greatest Common Factor: 1

Prime Factors of 15 are 3 and 5 Prime Factors of 25 are 5 and 5 Obviously 5 is the GCF, however, in general find the prime factors and multiply all the common factors. The GCF is 5.

Since 15 is a factor of 75, and 15 is its own largest factor, the greatest common factor must be 15.Another way to determine the greatest common factor is to find all the factors of the numbers and compare them.The factors of 15 are 1, 3, 5, and 15.The factors of 75 are 1, 3, 5, 15, 25, and 75.The common factors are 1, 3, 5, and 15. Therefore, the greatest common factor is 15.The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.The prime factors of 15 are 3 and 5.The prime factors of 75 are 3, 5, and 5.The prime factors in common are 3 and 5, so the greatest common factor is 3 x 5 = 15.It is 15

Factors of 15: 1, 3, 5, 15Factors of 75: 1, 3, 5, 15, 25, 75GCF (15, 75) = 15

THe GCF of 225 and 375 is 75.The factors of 225 are: 1, 3, 5, 9, 15, 25, 45, 75, 225The factors of 375 are: 1, 3, 5, 15, 25, 75, 125, 375The common factors are: 1, 3, 5, 15, 25, 75The Greatest Common Factor (GCF) is: 75