7. Give an example of each of the following. If you think no such example exists, explain why not. (d) An inconsistent set of formulas where every formula in the set is satisfiable. (e) A consistent set of formulas where one of the formulas is a contradiction. (f) A consistent set of formulas that contains both a contingency and a tautology. (g) An invalid argument with two premises where the premises and the conclusion are all contingencies. (The contingency requirement is just there to rule out some very silly answers.) (h) Two formulas (call them "p" and "q") such that the argument 9 is valid. Write your answer in the form: "p and q= 10. Consider the following argument. Without building a truth table, decide whether or not you think it is valid. Write down your answer, and explain in your own words why you think the argument is valid or invalid. Remember, do not build a truth table! This problem is just to get you thinking. You will not be graded on whether you are correct, but you may lose points if you don't really try to come up with an answer and an explanation, or if we can't understand what you're talking about. A C C + (DAE) DAB