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
67. Find the compound proposition Q constructed inExample 10for then-queens problem, and use it to find all the ways thatnqueens can be placed on an
a) 2.
b) 3.
c) 4.
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