Verify the following facts by providing its truth tables. Fact 1.2.1. Let P, Q, R and S be statements. 1. (P- Q) A P Q. 2. (P Q) A ¬Q=-P. 3. PAQ P. 4. (P V Q) A -P Q. 5. P >Q=P Q. 6. (P> Q) A (Q→ P) =...

(please solve 6,7,)

Extracted text: Verify the following facts by providing its truth tables. Fact 1.2.1. Let P, Q, R and S be statements. 1. (P- Q) A P Q. 2. (P Q) A ¬Q=-P. 3. PAQ P. 4. (P V Q) A -P Q. 5. P >Q=P Q. 6. (P> Q) A (Q→ P) = P > Q. 7. (P Q) A (Q→ R) = P R 8. (P→ Q) ^ (R → S) A (P V R) =QV S.