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Math 11 Chapter 2
Number System
Test - 7
1.
The set {1} possesses closure property with respect to?
a) Multiplication
b) Neither (A) nor (B
c) Both (A) and (B)
d) Addition.
2.
Simplify (-ai)4 , a E R?
a) a4 i
b) a4
c) -a4
d) -a4 i
3.
Complex plane
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4.
The property used in the equation (x+y) z = xz+yz is?
a) Commutative law
b) Distributive law
c) Associative law
d) Identity law
5.
π = Circumference of any circle/Length of its diameter is________
a) Irrational number
b) Recurring decimal.
c) Integer.
d) Rational number
6.
Z.
Z
= …………………….
a) None
b) 0
c) |Z|
d) |Z|
2
7.
Write as a simple complex number i/1+i?
a) -1/2+1/2i
b) 1/2+1/2i
c) 1/2 - 1/2i
d) -1/2 - 1/2i
8.
| Z
1
+ Z
2
|
£
| Z
1
+ Z
2
|where Z
1
and Z
2
are complex numbers.
a) False
b) True
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