Construct a truth table for each of the following arguments to determine whether they are valid or invalid.
In order to get credit for this assignment, you must show your work (i.e. you must construct a truth table for each example).
1. Premise 1: P → Q, Premise 2: Q → R, Conclusion: P → R
2. Premise 1: – P → – Q, Premise 2: – Q, Conclusion: – P
3. Premise 1: (P v Q) → R, Premise 2: – R, Conclusion: – P & – Q
4. Premise 1: P & Q, Premise 2: Q → R, Conclusion: – R → – P
5. Premise 1: P → Q, Premise 2: Q → P, Conclusion: P ↔ Q