Can You Use A Serial For A Game More Than Once I Don't Like The Sims 3. I Want To Sell It On EBay But Will This Pose A Problem Concerning The Serial Code?

I don't like The Sims 3. I want to sell it on eBay but will this pose a problem concerning the serial code? - can you use a serial for a game more than once

The game comes with a serial code that you need, when you have it installed, they can be used only once, which means that my game can sell on eBay?

If I uninstall the game on my computer, so that the number of codes that they are used again to sell me?