What two numbers have a GCF of 49?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 49.

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 49. Below is the beginning list of multiples of 49 (1 through 7) in numerical order.

1. 49
2. 98
3. 147
4. 196
5. 245
6. 294
7. 343
etc...

Two numbers that have a GCF of 49 can be 49 and any other number on the list above. Thus, two numbers that have a GCF of 49 are:

49 & 98
49 & 147
49 & 196
etc...

That is not all! Any combination of any multiple of 49 and "odd" multiples of 49 will also have GCF of 49. 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 49.

98 & 147
98 & 245
196 & 245
196 & 343
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 49. 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 49, what are the numbers?" or "What are two numbers whose GCF is 49?"

What two numbers have a GCF of 50?
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