Question 3. Define the following predicates: Real(x) "r is a real mumber". Pos(r) = "r is a positive real mumber,." Neg(x) "x is a negative real number." Int(r) "x is an integer." !3! Rewrite the following statements without using quantifiers. Determine which statements are true or false and justify your answer as best you can. a) Pos(0) b) Vr, Real(r) A Neg(x) Pos(-z) c) Vr, Int(r) Real(r) d) 3r such that Real(r)A~ Int(x)