3. State the properties of sets and prove were possible eg De Morgan's law, associativity etc
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Step-by-step explanation:
The rules can be expressed in English as:
the negation of a disjunction is the conjunction of the negations; and
the negation of a conjunction is the disjunction of the negations;
or
the complement of the union of two sets is the same as the intersection of their complements; and
the complement of the intersection of two sets is the same as the union of their complements.
or
not (A or B) = not A and not B; and
not (A and B) = not A or not B
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