You determine all numbers that will can be divided evenly (without a remainder) into the object numbers. The highest number doing that is the common factor.
You need at least two numbers to find a GCF.
You need at least two numbers to find a GCF.
To find a common factor, you need at least two numbers.
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.
Factor both numbers. Select the factors they both have in common. Choose the largest (greatest) one.
Two or more numbers are needed to find their greatest common factor.
Two or more numbers are needed to find their highest common factor.
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.
There cannot be a 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.
The least common factor of any set of integers is 1.
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.
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.