The correct statement(s) concerning the structure P,Q,R & S is/are

The correct statement(s) concerning the structures E, F and G is/are

The correct statement(s) concerning the structures E, F and G is/are

The correct statement(s) concerning the structures E, F and G is (are)

The correct statement(s) concerning the structures E, F and G is (are):

Which of the following statement about the relationships of the structure (P), (Q),® and (S) is incorrect ?

Which of the following statements about the relationships of the structure (P), (Q), (R) and (S) is incorrect?

If the statements p and q are true and the statement r and s are false, find the truth values of : (1) ~[(pvvq)^^~r]^^{[(~pvvq)vv(~r)]vvs} (2) p^^[q^^(~p^^r)vv~s]vv~r .