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9th Class Mathematics Chapter 2 Real and Complex numbers English Medium KPK Boards Online Mcqs MCQs With Answers
Question # 1
Choose an answer
a = Im
a = Re(z)
a = Natural number
None of these
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Question # 2
If Z < 0 then x < y
→
Choose an answer
xz < yz
xz > yz
xz = yz
None of these
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Question # 3
Choose an answer
-2/5
2/5
5/2
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Question # 4
The value of (-i)
8
:
Choose an answer
-i
i
1
-1
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Question # 5
Set of Real numbers =
Choose an answer
Q
Q'
Q
Ⴖ
Q'
QUQ'
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Question # 6
If Z = Z
2
and Z
2
= Z
3
then Z
1
= Z
3
this property is known as ______ property:
Choose an answer
Reflexive
Symmetric
Transitive
Commutative
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Question # 7
A non-terminating, non-recurring decimal represents:
Choose an answer
A natural number
A rational number
An Irrational number
Prime number
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Question # 8
The conjugate of 6 + 5i.
Choose an answer
-6 + 5i
-6 - 5i
6 + 5i
6 - 5i
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Question # 9
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Question # 10
Every real number is also a complex number with imaginary part as ______
Choose an answer
1
b
O
10
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Question # 11
Choose an answer
Additive identity
Additive inverse
Multiplicative identiry
Multiplicative inverse
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Question # 12
Solution of x
2
= -1 in real numbers:
Choose an answer
-1
+1
+1
Solution does not exist
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Question # 13
There exists a unique real number 1, is called ________ in multiplication:
Choose an answer
Multiplicative inverse
Additive inverse
Multiplicative identity
Additive identity
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Question # 14
Which of the following sets have the Closure Property w.r.t addition.
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{0}
{0, -1}
{0,1}
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Question # 15
Every real number is:
Choose an answer
a Positive integer
a rational number
a negative integer
a complex number
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Question # 16
∀ a∈ R⇒ a = a is __________ property:
Choose an answer
Reflexive
Symmetric
Transitive
Additive property
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Question # 17
The conjugate of 5+ 4i is:
Choose an answer
-5 +4i
-5 - 4i
5 - 4i
5 + 4i
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Question # 18
∀ a∈ R⇒ a + o = a = o + a, then O is called:
Choose an answer
Multiplicative identity
Additive identity
Additive inverse
Multiplicative inverse
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