Explain the truth functional contradiction

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  1. Consider a disjunction one of whose disjuncts is contingent.  Is the disjunction a tautology, a truth functional contradiction, or contingent?  Explain your answer in detail.
  2. Suppose we have an invalid argument. Could the conclusion of that invalid argument be logically equivalent to a tautology? Explain your answer in detail. 

Reference no: EM133079642

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