Which one of the following is not a contradiction? `[~ p^^(pvv~ q)]^^q` b. `(~ p^^q)vvp` c. `[(pvecq)vec]^^~ p` d. `(~ qvec~ p)harr(pvecq)`

Which one of the following is not a contradiction? [~ p^^(pvv~ q)]^^q b. (~ p^^q)^^p c. [(p (vec)q)(vec) p]^^~ p d. (~ q (vec) ~ p)harr(p (vec) q)

Which one of the following is not a contradiction? [sim p^^(p vv sim q)]^^q b.(sim p^^q)vv p c.[(p rarr q)rarr]^^sim p d.(sim q rarr sim p)harr(p rarr q)

Show that [not q ^^ p] ^^ q is a contradiction.

Which of the following is not equivalent to (p^^~ q)->r (a) ~(q v ~ p)->r (b) ~ r->(~ p v q) (c) ~((p^^(~ q))^^(~ r)) (d) ~ r->(~ p^^q)

~ [ ~ p ^^ ( p harr q)] -=

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

Construct the switching circuit for each of the following statements : (1) (p^^q)vv(~p)vv(p^^~q) (2) (p^^q^^r)vv[~pvv(^^~r)] (3) [pvv(~p^^q)]vv[(~q^^r)vv~p]