Examlex
After what age does a child's appetite change most dramatically?
Not (p And Q)
A logical operation that negates the conjunction of two propositions; true only when either P is false, Q is false, or both are false.
Compound Proposition
A statement formed by combining two or more propositions with a logical operator, such as "and," "or," or "not."
Contrapositions
Logical relationships between statements where the antecedent of one is the negation of the consequent of the other, and vice versa.
Contraries
Concepts, assertions, or items that are opposite in nature, characteristics, or meaning.
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