false. it is always even
That is false. Two is a prime number and two is even.
it depends
The product of two odd numbers is always odd.
The sum of two odd numbers is always even.
It is true that the sum of 2 even numbers is never odd
No, it is not true: it depends on what your numbers are.
The GCF is, yes.
Yes.
false. it is always even
Yes.
There are two truths about odd numbers. When added you get an even number... always! When multiplied you get an odd number... always!
True.
Yes, that is true.
No.
My conjecture (an opinion based on incomplete information) is that the product of two odd numbers is 22. There is no requirement for a conjecture to be true.
That is false. Two is a prime number and two is even.