Question: what is the z number set?
Answer: The set of integers is represented by the letter Z. An integer is any number in the infinite set, Z = (..., -3, -2, -1, 0, 1, 2, 3, ...} ... Z+ is the set of all positive integers (1, 2, 3, ...), while Z- is the set of all negative integers (..., -3, -2, -1).