You need at least two numbers to do that.
Example: 30 and 42
List the factors.
1, 2, 3, 5, 6, 10, 15, 30
1, 2, 3, 6, 7, 14, 21, 42
Select the common factors.
1, 2, 3 and 6.
you start by prime factoring both numbers. Then you compare factors find the ones in common. If you multiply all of them together you will get the greatest common denominator of the two numbers.
Example: Find the greatest common denominator of 305 and 75.
300=5*60=5*3*2*5
75=3*25=3*5*5
the common factors are 5,5 and 3 so the greatest common denominator is 3*5*5=75
To simplify the fraction, I guess. You don't really need the GREATEST common factor; if you find ANY common factor, you can divide top and bottom by that common factor, then continue looking for other common factors.To actually find the greatest common factor of two, here are three methods:
* List all the factors of each number. Look which factors they have in common. Only appropriate for fairly small numbers.
* Split each of the numbers into prime factors. Take all the COMMON factors, and multiply them together. Appropriate for intermediate-sized numbers.
* Use Euclid's algorithm. Appropriate for numbers of any size. As an example, the greatest common factor of 14 and 10 is the same as the greatest common factor of 10 and 4 - where 4 is the remainder of the division, of 14 by 10. Continue until one of the numbers is zero: gcf(10,4) = gcf(4,2) = gcf(2,0), so the greatest common factor is 2.
You'll need at least two numbers.
Example: 30 and 42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Select the common factors.
2 x 3 = 6, the GCF
You need at least two numbers.
Example: 30 and 42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Select the common factors.
2 x 3 = 6, the GCF
Example: 30 and 42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Select the common factors.
2 x 3 = 6, the GCF
Fractions don't have factors.
The least common factor is always 1.
There cannot be a greatest common factor of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.
There cannot be a greatest common factor (GCF) of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.
You need at least two numbers to find a GCF.
There cannot be a greatest common factor (GCF) of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.
24
Two or more numbers are needed to find their greatest common factor.
You need at least two numbers to find a GCF.
You need at least two numbers to find a GCF. There cannot be a greatest common factor if there are not at least two numbers to compare. The greatest common factor is the largest factor that all the numbers have in common - the largest factor that they all share.
It is meaningless to ask "What are the greatest common factor of 9". There should be two or more numbers. Greatest common factor means the greatest number which is the common factor of all the numbers mentioned.
Two or more numbers are required to find the greatest common factor between them.
There is no Greatest Common Factor (GCF) for a single number. The Greatest Common Factor (GCF) is the largest factor common to two or more given numbers.
You need at least two numbers to find a GCF.
At least two or more numbers must be given to find their greatest common factor
You need at least two numbers to find a GCF.
To find a common factor, you need at least two numbers.
There cannot be a greatest common factor of just one number. To be common there need to be at least two numbers. If you find all the factors of two or more numbers, and you find some factors are the same ("common"), then the largest of those common factors is the Greatest Common Factor.
You need at least two numbers to find a GCF.