Q: Is it possible for two numbers to not have a common factor?

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It is not possible to give a sensible answer to this question. The highest common factor (HCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question!

It is not possible to give a sensible answer to this question. The highest common factor (HCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question!

That would be called a "common factor" of the two (or more) numbers.

All numbers have a common factor of 1. Sometimes that's the only common factor.

It is not possible to give a sensible answer to this question. The highest common factor (HCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question!

Related questions

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 not possible to give a sensible answer to this question. 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.If you meant 8 and 4, then the greatest common factor is 4.You need at least two numbers to find a GCF.

No because every single number has a factor of one, therefore you have one as the common factor.

No. Two numbers are relatively prime if they have no prime factors in common. Two even numbers will have 2 as a prime factor in common.

Yes. Not counting one as a factor, you could have numbers like 6 and 10 which only share one common factor, 2.

It is not possible to give a sensible answer to this question. 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!

It is not possible to give a sensible answer to this question. 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!

It is not possible to give a sensible answer to this question. 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!