Question

1. which of the following sets is considered a null set?

weeks with eight days
books with pages
dogs with four legs
mugs with handles

Explanation:

A null set (empty set) contains no elements. A week has 7 days by definition, so "weeks with eight days" has no members. "Books with pages" has many elements (most books have pages), "dogs with four legs" has many elements (most dogs have four legs), and "mugs with handles" has many elements (many mugs have handles).

Answer:

A. weeks with eight days