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 A∩B∩C.
(b) Draw a Venn diagram to represent A∩B∩C.
Solution:
(a) A∩B∩C= {5, 7}
(b)
4. The complement of the intersection of two sets, P and Q, represented by (P ∩ Q)’, is a set that consists of all the elements of the universal set, ξ, but not the elements of P ∩ Q.
5. The complement of set (P ∩ Q)’ is represented by the shaded region as shown in the Venn diagram.
