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April 25, 2015

Homework Help: Math

Posted by Connor on Sunday, March 30, 2014 at 9:11pm.

Find the number of elements in A1∪A2∪A3, supposing that there are
103 elements in A1,
992 elements in A2,
10011 elements in A3,
in each of the following situations:

(a) The sets are pairwise disjoint, that is, no pair has common elements, that is, the intersection of the two sets in any given pair is empty.



(b) A1⊆A2⊆A3.



(c) Each pairwise intersection of these sets has the same cardinality 16 , and the intersection of all three sets has cardinality 2.

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