just the blue ..... Descret math

Question 10: Show that each of these conditional statements is a tautology by using truth tables. r) a) (-p (p V9)] b) [(p ) ^ (9 n)] ( p c) [pA ( p )] d) [(p V a) A ( p r) ( r)] Question 11: The dual of a compound proposition that contains only the logical operators V, A, and is the compound proposition obtained by replacing each V by A, each A by V, each T by F, and each F by T. The dual of sis denoted by s* Find the dual of each of these compound propositions. a) p A- A- b) (p AqAr) Vs c) (p V F) A (VT)