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The numbers three and five have the greatest common factor of one.

Q: What 2 numbers are the GCF of one?

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Yes, if one of the numbers is a factor of the other.

If one of the numbers is a multiple of the other, the smaller number is the GCF. If the two numbers are prime numbers, the GCF is 1. If the numbers are consecutive, the GCF is 1. If the numbers are consecutive even numbers, the GCF is 2.

Any set of numbers can have only one GCF. GCF(18, 24, 40) = 2

The GCF is 1.

Since the numbers differ by 2 and the GCF is 2, they are consecutive even integers. So the numbers are 6 and 8.

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Yes, if one of the numbers is a factor of the other.

If one of the numbers is a multiple of the other, the smaller number is the GCF. If the two numbers are prime numbers, the GCF is 1. If the numbers are consecutive, the GCF is 1. If the numbers are consecutive even numbers, the GCF is 2.

Any consecutive even numbers have a GCF of 2.

14 and 28 are one pair.

Any set of numbers can have only one GCF. GCF(18, 24, 40) = 2

12

The numbers 2 and 30 have a GCF of 2 and an LCM of 30.

The GCF is 2.

The GCF is 1.

The GCF is 2.

If the GCF of two numbers p and q is 7, then the GCF of p2 and q2 is 14.

There's a lot of possibilities. Any set of consecutive even numbers has a GCF of 2.