valid. disjunctive syllogism , do not know if it is sound or unsound .
Note: We dont know if the Yankees actually will not win so we cant say if it is sound or not.
1. Either the Yankees will win the American League pennant or their manager will get fired....
Deductive arguments have FORMAL structure. It is only the formal structure that CAN be valid. Two INVALID forms of argument are: If P, then Q, Not P, so Not Q (fallacy of denying the antecedent; fallacy because Negating the consequent does not follow from Negating the antecedent) If P, then Q, Q, so, P (fallacy of affirming the consequent; fallacy because antecedent does not follow from affirming the consequent) Decide whether the following arguments are valid or invalid: If the moon...