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I want solutions to the questions I am attaching below. Competencies 5 & 6Is the following argument valid? Draw a truth table to show whether it is valid or not; if it is
invalid, give a counterexample:
((P & Q) v (Q ≡ R)), (¬P v R) Therefore (¬Q É R) Competency 7
Draw a truth-tree for the following propositional logic argument. Give a counterexample if
it is invalid. (P v (¬S > Q)), (P > R) Therefore (¬(Q & R) > S)
Competency 8 Prove the following derivation using Natural Deduction. For this example, you will not
need to use assumptions; you are permitted to, however, so long as you use them correctly. ((¬ Q > P) v Q), (¬ Q v R), (¬R & S) Therefore (P v ¬S)
Competency 9
Prove the following derivation using Natural Deduction. For this example, you WILL need
to use at least one assumption.
((¬ P v R) > Q), (S ≡ (Q v P)) Therefore (¬P > S)
Competency 14 and 15 Using a truth-tree, test the following predicate logic (QL) argument for validity. If it is
invalid, construct a valuation that shows this.Ex(Px & Hx), Ax(Gx É Hx) Therefore (ExGx > AxHx)

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