Chart Series Basic Mathematics I + A Chart Series Basic Mathematics II + B Chart Series Basic Mathematics III Chart Series Basic Mathematics I + A <Answer Edition> Chart Series Basic Mathematics II + B <Answer Edition> Chart Series Basic Mathematics III <Answer Edition> Set of 6 books. There is some minor wear on the covers, but the books themselves are in clean condition with no writing. I apologize if I missed anything. Please refrain from purchasing if you are concerned about minor details or are overly sensitive, as these are items stored at home.✨