You can 
put this solution on YOUR website! i get the following:
              P      Q     (Q or P)   (not P)   (Q or P) and (not P)
             ---------------------------------------------------------
              T      T        T          F              F
              T      F        T          F              F
              F      T        T          T              T
              F      F        F          T              F
(Q or P) is true for all cases except FF.
not P is true if P is false and false if P is true.
(Q or P) and not P is false for all cases except TT.