Problem

Mark each statement True or False. Justify each answer.(a) When an implication p ⇒ q is us...

Mark each statement True or False. Justify each answer.

(a) When an implication pq is used as a theorem, we refer to q as the conclusion.


(b) A statement that is always false is called a lie.


(c) The converse of pq is qp.


(d) To prove "∀ n, p(n)" is false, it takes only one counterexample.


(e) To prove "∃ np(n)" is false, it takes only one counterexample.

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Solutions For Problems in Chapter 1.3S