Decide whether the argument is valid or a fallacy, and give the form that applies. If he knows the material, he will do well. He will do well. He knows the material. Let p be the statement "he knows the material," and q be the statement "he will do well." The argument is by [(p →q) ^ -p] → ~q. [(pq) q] → ~p. [(p →q) Ap] → 9. [(pq) Ap] → q. [(pq) q] → p.