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No not always as for example the GCF of 7 and 21 is 7

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7y ago

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What is a pair of numbers to the gcf number 2?

Any consecutive even numbers have a GCF of 2.


Is the GCF of any two even numbers is always even?

The GCF of any two odd numbers is always odd. The GCF of any two even numbers is always even. The GCF of an odd and an even number is always odd.


Why is the gcf of any two even numbers always even?

All even numbers have two as a factor. Any two even numbers have (at the least) two as a common factor. That means the GCF of any two even numbers will have two as a factor. Any number that has two as a factor is even.


Is the GCF of any two numbers always odd and why?

The GCF of any two odd numbers is always odd because odd numbers don't have any even factors. The GCF of any two even numbers is always even because even numbers are divisible by two and any common factors would have at least one two in common. The GCF of an even and an odd number is odd because odd numbers don't have any even factors.


Is the gcf of a odd number and an even number always even?

The GCF of an odd and even number is never even.


What 2 numbers a gcf of 2?

2 and any even number, and many more


What are two numbers whose GCF is 2?

2 and any other even number.


What is the GCF of 2 and any even number?

The GCF of 2 and any even number is 2.


Why is the gcf of an odd number and an even number always odd?

Because odd numbers don't have any even factors so they can't have any in common.


What numbers have a prime gcf?

Any consecutive even numbers.


Is the gcf of any 2 even numbers always even?

If x is an odd number that is a common factor of 2 even numbers, so is 2x. So the answer is yes.


What is the GCF of every number?

It is impossible to list the GCF of every pair of numbers, because there are infinitely many numbers. If you are looking for the GCF of any number by itself, the GCF of a single number is that number.