What two numbers have a GCF of 905?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 905.

There is actually an infinite number of answers to this question. First, note that both the numbers we are looking for must be multiples of 905. Below is the beginning list of multiples of 905 (1 through 7) in numerical order.

1. 905
2. 1810
3. 2715
4. 3620
5. 4525
6. 5430
7. 6335
etc...

Two numbers that have a GCF of 905 can be 905 and any other number on the list above. Thus, two numbers that have a GCF of 905 are:

905 & 1810
905 & 2715
905 & 3620
etc...

That is not all! Any combination of any multiple of 905 and "odd" multiples of 905 will also have GCF of 905. We numbered the multiples above so it would be easy to identify the "odd" multiples (number 1, 3, 5, 7, etc). Thus, here are some more examples of two numbers that also have a GCF of 905.

1810 & 2715
1810 & 4525
3620 & 4525
3620 & 6335
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 905. The lists we created can go on forever.

Two numbers have a GCF of Calculator
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Teacher Tip: If you are a teacher, you could ask these questions of your students: "I am thinking of two numbers and the GCF is 905, what are the numbers?" or "What are two numbers whose GCF is 905?"

What two numbers have a GCF of 906?
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