5.3 Exercise Let P(z) be the predicate "r is a prime number" and the domain of discourse be the set of positive integers Determine the truth value of the following statement: Vr P(x). 5.4 Exercise Let Q(z) be the predicate " is a perfect square" and the domain of discourse be the set of integers. Determin the truth value of the following statement: Er Q(z). 5.5 Exercise Let R(x, y) be the predicate "z divides y" and the domain of discourse be the set of positive integers. Determin the truth value of the following statement: Vray R(x,y). 5.6 Exercise Let P(z) be the predicate "z is a prime number" and the domain of discourse be the set of positive integers Determine the truth value of the following statement: 3r P(r).

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