3.3a Intersection of Sets


Example 1:
Given that A= {3, 4, 5, 6, 7}, B = {4, 5, 7, 8, 9, 12} and C = {3, 5, 7, 8, 9, 10}.
(a) Find ABC.
(b) Draw a Venn diagram to represent ABC.
 
Solution:
(a) ABC= {5, 7}
(b)
 


4. The complement of the intersection of two sets, P and Q, represented by (PQ)’, is a set that consists of all the elements of the universal set, ξ, but not the elements of PQ.

5. The complement of set (PQ)’ is represented by the shaded region 
as shown in the Venn diagram.
 
 
 
 

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