To find a pair of numbers with a given GCF, take the GCF number and double it. The pair of numbers is the GCF, and two times the GCF. For instance, two numbers with a GCF of 3 are 3 and 6.
The GCF is 1.
The GCF is a single number so there cannot be any pair of numbers in the answer.
Any consecutive even numbers have a GCF of 2.
The greatest common factor of the numbers 105 and 245 is 35.
The product of the GCF and LCM of a pair of numbers is equal to the product of the numbers.
Any pair of prime numbers as for example 19 and 23
When one of the numbers is a factor of the other.
The GCF is 31.
5 and 7
8 and 16