1. (1 Point each) For each of the following concepts encountered during the course, give the precise definition (using logical symbols-state what the variables are): (a) Odd integer; (b) perfect square; (e) an integer n divides an integer m; (d) a set A is a subset of a set B (e) the union of two sets; (f) the intersection of a family of sets; (g) given a function f: A+B and SCA, the image f(S); (h) given a function f: A+B and T C B, the inverse image f(T).