Prove using natural deduction rules, give a formal proof (1)(P v R) -> (Q v s) from the premise Q -> Q, R -> S

(2) (~P v Q) -> (P->Q)

(2) (~P v Q) -> (P->Q)

### Recently Asked Questions

- In an Innocence Project, but only had the resources to help one falsely accused person? What criteria would be best to decide who to help? What severity or

- If the obtained probability in an experiment equals 0.1500, then the probability that chance alone is at work equals 0.1500. Is this statement true? Explain.

- A panel of consumers was asked to rate "Natural Vitaglo" breakfast cereal before and after a change in manufacturing techniques. A higher number reflects a