I know that the number of buns in a package (10) is not the same as the number of hot dogs (8). This means that you have to find something to do with two extra hot dog buns. It has been a long time since I bought either a pack of hot dogs or hot dog buns, so this is not a problem for me.
I just discovered that this applies to shower curtains. I thought there was only one standard number of holes. A decorative curtain has 12 holes. A pack of shower rod rings has 12 rings. I replaced my shower curtain liner, and it only had 10 holes. There is no indication of this on the package. There is a dimension listed, but no big graphic that says, “Only 10 Holes!”