1. Predicates require a variable and that variable must

A) be uniquely defined

B) be defined over all possible sets

C) be true for multiple values

D) come from a clearly defined set of values

2.

Given xZ, the set of integers, which of the following predicates is true? xZ,x3=x If P(x) is 2x=x+2, then P(x) has no solution. xZ,3x is odd !xZ,x=x2xZ,x20