Q: True or false:5 is the greatest common factor of 15, and 30?

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True

Its true

greatest

True. By definition for two numbers to be relatively prime they must not share any common factors. So their greatest (and only) common factor would be 1.

The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers. The greatest common factor of 36 and 49 is 1

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The greatest factor that two or more numbers have in common is known as the greatest common factor, or GCF.

True

True

Its true

No.

No.

The greatest common factor of 16 20 and 36 is 4.

greatest

Actually, both can be true, but the answer your teacher is probably looking for is "greatest."

True. By definition for two numbers to be relatively prime they must not share any common factors. So their greatest (and only) common factor would be 1.

The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers. The greatest common factor of 36 and 49 is 1

No, that's not true.