This is phi class homework. please help me

Truth Tables Complete the truth table, then indicate whether the formula is a tautology, a contradiction, or a contingent statement. 19. p ((p V-p) & q) q mp PV-p (p V-p) & p ((p V-p) & q) T T T F F T F F (a) tautology (b) contradiction (c) contingent 20. (p & (q->r)) V- q r - 9 ->r p & (9->r) (p & (9 ->r)) V-a T T T T T F T F T T F F F T F T F F F T F F F (a) tautology (b) contradiction (c) contingent