1. uppercase letters will be used to name__________

2. _________is usually denoted by capital letter U

3. the symbol_______will be used to refer to a Null set

4. in________number are processed to obtain another number through addition, subtraction multiplication, or division.

5. in any set operation, all the sets under investigation will likely be________of a universal set

6. object in a set are called _______of the set

7. in the___________a set is defined by starting a property or properties that describe all members of the set

8.in the_________the elements are listed separated by a comma, and enclosed in a pair of brackets { }.

9. the set A is a__________of set B if all element of A are also elements of B.​