Welcome to your Ch # 2 Real and Complex Number quiz3

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**

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**.