Concept explainers
We now present a group of exercises that involve the logical operatorsNANDandNOR. The propositionp NAND q, is true when eitherporq, or both, are false; and it is false when bothpandqare true. The propositionp NOR qis true when bothpandqare false, and it is false otherwise. The propositionsp NAND qandp NOR qare denoted by
60. Show that ifp,qandrare compound propositions such that p and q are logically equivalent andqandrare logically equivalent, thenpandrare logically equivalent.
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