3, 6, and 9 have a greatest common factor of 3.
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When you are trying to find the GCF of two numbers and one of the numbers is a multiple of the other, the GCF will be the smaller of the two numbers. The GCF of 3 and 9 is 3.
The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question! The greatest factor of any number is itself.
3 and any multiple of 3 have a GCF of 3. Any two multiples of 3 that differ by 3 have a GCF of 3. I'm not sure how to interpret "twice the smaller number is bigger."
The GCF is the smaller number. The GCF of 2 and 4 is 2. The GCF of 3 and 6 is 3. The GCF of 7 and 49 is 7.
The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question! The greatest factor of any number is itself.