Say whether the following are correct. If yes, provide a natural deduction proof. If not, provide a counterexample. (a) P → QF (R → P) → (R → Q) (b) P → Q, R V ¬PE P → R (c) QV P, ¬Q –→ R, P V RF Q → P

Computer Networking: A Top-Down Approach (7th Edition)
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Author:James Kurose, Keith Ross
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Chapter1: Computer Networks And The Internet
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Say whether the following are correct. If yes, provide a natural
deduction proof. If not, provide a counterexample.
(a) P → QF (R → P) → (R → Q)
(b) P → Q, R v ¬PF P → R
(c) Q V P, ¬Q → R, P V RF Q → P
Transcribed Image Text:Say whether the following are correct. If yes, provide a natural deduction proof. If not, provide a counterexample. (a) P → QF (R → P) → (R → Q) (b) P → Q, R v ¬PF P → R (c) Q V P, ¬Q → R, P V RF Q → P
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