There are many calculators online that will do that. They will not provide you with any understanding of the process, but they are known for their speed.
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.
You don't; you need at least two numbers to find a GCF.
You need at least two numbers to find a GCF.
You need at least two numbers to find a GCF. The GCF of 21 and 42 is 21.
You need at least two numbers to find a GCF.
You need at least two numbers to find a GCF.
You need at least two numbers to find a GCF.
You need at least two numbers to find a GCF. If that's 72 and 96, the GCF is 24.
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.
You need at least two numbers to find a GCF.
You need at least two numbers to find a GCF. If that's 16 and 66, the GCF is 2.
You need at least two numbers to find a GCF.