Yes, the greatest common factor of two different prime numbers is always 1
Always even.
No, but it's always an even number.
Yes.
No, it is never even.
Yes, the least common multiple of two numbers is always divisible by those numbers' greatest common factor.
Yes, the greatest common factor of two different prime numbers is always 1
No.
No. The greatest common factor of any two or more numbers is always the single highest common factor.
The greatest common factor of two numbers has to show up on the lists of factors of both numbers.
Yes.
The least (meaning lowest) common factor of any set of whole numbers is always 1. The greatest common factor of any set of whole numbers will depend on the factors of the individual whole numbers in the set.
Of course not. In fact, the greatest common factor of two odd numbers is never 2.-- 2 is never a factor of any odd number.-- The greatest common factor of the odd numbers 651 and 1,085 is 217.
Yes.
It will always be 1.
No.
Yes.