# If A and B are known to be true and X and Y are known to be false, but the truth values of P and Q are not known, of which of the following statements can you determine the truth values?

If A and B are known to be true and X and Y are known to be false, but the truth values of P and Q are not known, of which of the following statements can you determine the truth values?

1) [P V (Q . A)].~[(P V B) . (P V A)

2) [P V (Q.X)].~[(P V Q) . (P V X)

3) ~[~ P V (~Q V X)] V [~(~P V Q) V (~P V X)]

4) ~[~P V (~Q V A)] V[~(~P V Q) V(~P V A)]

5) ~[( P . Q) V (Q . ~P)] . ~ [(P . ~Q) V (~ Q . ~P)]