Which of the following is false? `(p=>q)hArr(~ a=>~ p)` b. `pvv(~ p)` is a tautology c. `~(~ p)hArr(~ q=>~ p)` is a tautology d. `p^^(~ p)` is a contradiction

Which of the following is false? a. (p=>q)hArr(~ q=>~ p) is a contradiction b. pvv(~ p) is a tautology c. ~(~ p)hArr(~ q=>~ p) is a tautology d. p^^(~ p) is a contradiction

Show that (i) p to (pvvq) is a tautology (ii) (pvvq) ^^(~ p ^^~q) is a contradiction

Show that (i) p to (pvvq) is a tautology (ii) (pvvq) ^^(~ p ^^~q) is a contradiction

Show that (i) p to (pvvq) is a tautology (ii) (pvvq) ^^(~ p ^^~q) is a contradiction

Show that (i) p to (pvvq) is a tautology (ii) (pvvq) ^^(~ p ^^~q) is a contradiction

For any statements p, show that . (i) p vee ~ p is a tautology , ( ii) p ^^ ~ p is a contradiction

For any statements p, show that . (i) p vee ~ p is a tautology , ( ii) p ^^ ~ p is a contradiction

(t ^^ p) harr p , where t is a tautology, is

Show that (p^^q)vv(~p)vv(p^^~q) is a tautology

Show that (p^^q)vv(~p)vv(p^^~q) is a tautology