Yes, for example the trivial case in which the numbers are the same:
The GCF of 12 and 12 is 12.
This also occurs when one number is divisible by the other:
The GCF of 12 and 4 is 4.
43
only if they are equal
-936
The two numbers you multiply together to equal 391 are 17 by 23.
4760
No.
Yes, if one of the numbers is a factor of the other.
2 and 3
If one number is divisible by another (in this case, 15 is divisible by 5), then the least common multiple is equal to the larger of the numbers (15), and the greatest common factor is equal to the smaller of the numbers (5).If one number is divisible by another (in this case, 15 is divisible by 5), then the least common multiple is equal to the larger of the numbers (15), and the greatest common factor is equal to the smaller of the numbers (5).If one number is divisible by another (in this case, 15 is divisible by 5), then the least common multiple is equal to the larger of the numbers (15), and the greatest common factor is equal to the smaller of the numbers (5).If one number is divisible by another (in this case, 15 is divisible by 5), then the least common multiple is equal to the larger of the numbers (15), and the greatest common factor is equal to the smaller of the numbers (5).
Yes, if that number is a factor of the other.
Yes.
A single number cannot have a greatest common factor because "common" refers to factors that two or more numbers have in common. You have only one number.
Yes, if you're comparing a number to itself.
The least common factor of any set of numbers is 1.
Only if the magnitudes of two numbers are the same.
Yes as for example 34 and 45
Always equal to or less than the smaller number, yes.