Which of the following statements about logic reasoning is correct? 17. The proposition [???? ∨ (¬????)] → [???? ∨ (¬????)] is a tautology. a) Only item 1...
Which of the following statements about logic reasoning is correct?
17. The proposition [???? ∨ (¬????)] → [???? ∨ (¬????)] is a tautology.
a) Only item 17 is correct.
b) Items 16 and 18 are correct.
c) Items 17 and 19 are correct.
d) None of the items are correct.
17. The proposition [???? ∨ (¬????)] → [???? ∨ (¬????)] is a tautology.
a) Only item 17 is correct.
b) Items 16 and 18 are correct.
c) Items 17 and 19 are correct.
d) None of the items are correct.
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Ed 
A proposição [p ∨ (¬p)] → [q ∨ (¬q)] é uma tautologia, portanto a alternativa correta é a letra "a) Only item 17 is correct."
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