Yes, but you're working in a machine language were the numbers don't necessarily represent their arithmetical functions.
If I have 2 apples, and I get another 2 apples, I'll always end up with 4 apples no matter how many times I repeat the process. There is a 0% chance that I'll end up with 5 apples, or 3 apples or any other number of apples.
You are absolutely correct.