Question 4 1 pts > Let D {1, 3, 5, 7, 8, 9}. P(x) is the predicate "x is odd and x 5 Give a counterexample to show that P(x) is not true for all elements of D. Question 9 1 pts Consider the implication p + q. What is the relationship of implication p + 7q? O It is the negation of the original implication. O It is the converse of the original implication. It is the inverse of the original implication. It is the contrapositive of the original implication. None of the above. Question 10 1 pts Which of the following statements are logically equivalent to one another? (HINT: Express each statement using quantified statements over the domain S of all college students and the predicates C(x) meaning "x is a computer science major" and D(x) meaning "X takes discrete mathematics."). Some computer science majors take discrete mathematics. No computer science major takes discrete mathematics. Not every computer science major takes discrete mathematics. You must take discrete mathematics if you are a computer science major. Some computer science majors do not take discrete mathematics