1 
Set of Real numbers = 
 A. Q
 B. Q'
 C. Q<span style="fontsize:11.0pt;msobidifontsize:28.0pt;
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msofareastfontfamily:"Times New Roman";msofareastthemefont:minorfareast;
msohansithemefont:minorlatin;msobidithemefont:minorlatin;msoansilanguage:
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 D. QUQ'

2 
Real part of 2ab ( i + i<sup>2</sup>) is: 
 A. 2ab
 B. 2ab
 C. 2abi
 D. 2abi

3 
Every real number is: 
 A. a Positive integer
 B. a rational number
 C. a negative integer
 D. a complex number

4 
Real part of 2ab(i + i<sup>2</sup>) is: 
 A. 2ab
 B. 2ab
 C. 2abi
 D. 2abi

5 
Simplify from of 

6 
The conjugate of 5 + 4i is 
 A. 5 + 4i
 B. 5  4i
 C. 5  4i
 D. 5 + 4i

7 
a<sup>m</sup>.a<sup>n</sup> = a<sup>m+n</sup>is ________ law of exponents. 
 A. Sum of powers
 B. Power of fraction
 C. Power of power
 D. Law of quotient

8 
Conjugate of real number is: 
 A. Pure imaginary
 B. Real
 C. Complex
 D. None

9 
∀ a,b∈ R, a + b = b + a is _____________ Property of real numbers. 
 A. Closure property w.r.to '+'
 B. Closure property w.r.to 'x'
 C. Commutative property '+'
 D. Commutative property w.r.to 'x'

10 
The conjugate of 5+ 4i is: 
 A. 5 +4i
 B. 5  4i
 C. 5  4i
 D. 5 + 4i
