discrete structures

6) (2 points Use De Morgan's laws write the negation of the statement: "He swims or plays football" 7) 12 points show that the following conditional statement is a tautology by using a truth table. (p Aq) v (p - q) 8) [4 points) Without using truth tables, show that p-q-r) and 4 - (Vr) are logically equivalent. Show supporting evidence for each step of your proof. Steps Supporting evidence