Q: How do you check if two numbers are co - prime?

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No.

When the numbers are co-prime.

Two numbers are co-prime if their GCF is 1.

Two numbers, like 4 and 9, are considered co-prime if their GCF is 1.

The LCM is the product of the two numbers if and only if the two numbers are co-prime. That they are co-prime means they have no factors in common so that their GCF is 1.

Related questions

Two numbers are co-prime if they do not have any common factors. The numbers themselves need not be prime.

Two numbers are considered to be co-prime if they share no common prime factors, that is, if their GCF is 1.

No.

Relatively prime or co-prime.

When the numbers are co-prime.

Two numbers are co-prime if their GCF is 1.

The numbers are relatively prime or co-prime.

The numbers are CO-prime, but not necessarily prime numbers: think of 3 and 4....

Two numbers, like 4 and 9, are considered co-prime if their GCF is 1.

two identical numbers are never co-prime because each of them is a factor of the other.

Two numbers are considered to be co-prime if they share no common prime factors, that is, if their GCF is 1.

Yes.