17. • Universal set represent rectangle & it’s
subsets by circle
18.
19.
20. • Let A&B be two sets.
• Then Intersection of set A×B is denoted by A∩B and It is
defined by :- Ex:- A={1,2,3} , B={2,3,4} A∩B={2,3}
21.
22. Difference of Sets
• The difference of two sets A&B is denoted by
A-B and it is defined by:-
• A-B={x :x ∈ A but x ∉B}
• A={1,2,3,4} B={3,4,5,6} A-B={1,2} B-A={5,6}