Use quantifier conversion on each of the following state- ments: (i) Not all math books are correct. (ii) All math books are not correct. (iii) Some math teachers don't know what they are talking about. (iv) There does not exist a math professor who can teach well. Answer to (i) There exists a math book that is not correct. We write a negation of a quantifier by using a slash through the quan- tifier. For example, "there does not exist a direct flight from New York to Marseille" is written #f, f is a direct flight from New York to Marseille. We call this rule "quantifier conversion". More formally, (1) (Vx, P(x)) = (x,-P(x)) (2)-(3x, P(x)) (Vx, -P(x))