The document discusses different ways to represent sets including roster or tabular form, set-builder form, and using a universal set represented by a rectangle with subsets represented by circles. It also defines the intersection of two sets A and B as A∩B, containing elements that are members of both sets. Finally, it defines the difference of two sets A and B as A-B, containing elements that are members of A but not members of B.

2. • Ex:- The items you wear: shoes, socks, hat,
shirt, pants, and so on.

3. i) Roster or tabular form.
ii) Set-builder form.

17. • Universal set represent rectangle & it’s
subsets by circle

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}

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}