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+1 vote
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in Algebra by (34.2k points)
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Which of the following propositions is true?

(A) p \(\rightarrow\) q \(\equiv\) ~p \(\rightarrow\) ~q

(B) ~(p \(\rightarrow\) ~q) \(\equiv\) ~p \(\land\) q

(C) ~(p \(\leftrightarrow\) q) \(\equiv\)[~ (p \(\rightarrow\) q) \(\land\) ~ (q \(\rightarrow\)p)]

(D) ~(~p \(\rightarrow\)~q) \(\equiv\) ~p \(\land\) q

1 Answer

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by (33.8k points)
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Best answer

Correct answer: (D) ~(~p \(\rightarrow\)~q) \(\equiv\) ~p \(\land\) q

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