Problem

The answers to exercises marked [BB] can be found in the Back of the Book.Let A be the set...

The answers to exercises marked [BB] can be found in the Back of the Book.

Let A be the set of books for sale in a certain university bookstore and assume that among these are books with the following properties.

Book	Price	Length
U	$10	100 pages
W	$25	125 pages
X	$20	150 pages
Y	$10	200 pages
Z	$5	100 pages

(a) IBB] Suppose (n, b) ∈ if and only if the price of book a is greater than or equal to the price of hook b and the length of a is greater than or equal to the length of h. Is 7? reflexive? Symmetric? Antisymmetric? Transitive?

(b) Suppose (a. b) ∈ if and only if the price of a is greater than or equal to the price of b or the length of a is greater than or equal to the length of b. Is reflexive? Symmetric? Antisymmetric? Transitive?