# Real and Complex Number quiz3

Welcome to your Ch # 2 Real and Complex Number quiz3

1. Q∩Q'=
2. The sum of two real number is also a real number is called _____ property w.r.t Addition.
3. The ___ of two real number is also a real number is also called closure property.
4. Example of closure property ____.
5. Commutative property w.r.t addition is ___.
6. Commutative property w.r.t multiplication is _____
7.

Commutative property is ____

8. Associative property w.r.t Multiplication is ___.
9.

Zero is called ____ w.r.t

10. a + 0 = 0 + a = a  is
11.

The product of real number and zero is ____.

12. 1 is called _______ w.r.t multiplication.
13. a × 1 = 1 × a = a  is _______ property.
14.

The product of 1 and a number is ____.

15.

The sum of two numbers is zero (0) is called ____.

16. If a+a'=a'+a=0 then a' is called _______ of a.
17. If a+(-a)=-a+a=0 then -a is called _______ of a.
18. The product of two number is 1 is called ___.
19. If a.a-1=a-1.a=1 then a-1 is called ________ of a.
20.