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Mathematics ECAT Pre Engineering Chapter 1 Number System Online Test MCQs With Answers
Question # 1
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Rational
Irrational
Even
Odd
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Question # 2
Which element is the additive inverse of (a,b) in Complex numbers
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(a,0)
(0,b)
(a,b)
(-a,-b)
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Question # 3
In (x + iy) x is the known as
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Imaginary part of complex number
Real part of complex number
Complex number
None of above
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Question # 4
What is the conjugate of -7 -2i?
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-7 + 2i
7 + 2i
7 -2i
None of these
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Question # 5
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Question # 6
If a is any real number and a = a is called
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symmetric property
Trichotomy Properties
Transitive Property
Reflexive Properties
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Question # 7
What is the conjugate of -6 -i?
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-6 +i
6+i
-6 -i
6 -i
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Question # 8
QUQ, =
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N
R
W
Z
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Question # 9
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Question # 10
(7, 9) + (3, -5) =
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(4, 4)
(10, 4)
(9, -5)
(7, 3)
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Question # 11
The equation |x +4| = x has solution
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x = -2
x = 2
x = -4
x = 4
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Question # 12
The additive inverse of 1 is
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1
-1
0
Does not exist
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Question # 13
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Principle of equality of fractions
Rule for product of fraction
Rule for quotient of fraction
Golden rule of fractions
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Question # 14
If in a set of real no a is additive identity then
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a+a = 2a
a+a = 1
a+a = 0
None of these
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Question # 15
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Question # 16
If z
1
=√-36 ,z
2
=√-25,z3 =√-16 then
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15
15i
-15i
-15
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Question # 17
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Reflexive property
Symmetric property
Cancellations property w.r.t. addition
Transitive property
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Question # 18
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15
15 i
-15 i
-15
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Question # 19
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Multiplication property
Additive property
Trichotomy property
Transitive property of inequality
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Question # 20
Every irrational number is
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A real number
A prime number
A natural number
An integer
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Question # 21
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Question # 22
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Question # 23
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Question # 24
0.25 is ______
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An irrational number
A natural number
A prime number
A rational number
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Question # 25
The set {1, 2, 3, 4, ....} is called
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Set of Natural numbers
Set of whole numbers
Set of rational number
Set of irrational numbers
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Question # 26
Every prime number is also
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Rational number
Even number
Irrational number
Multiple of two numbers
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Question # 27
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Trichotomy property
Additive property of inequality
Transitive property
Multiplicative property
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Question # 28
The multiplicative inverse of 1 is
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1
-1
0
Does not exist
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Question # 29
The equation |x + 4| = x has solution
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x = -2
x = 2
x = -4
x = 4
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Question # 30
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Principle of equality of Fractions
Rule for product of fraction
Golden rule of fraction
Rule of quotient of Fraction
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Question # 31
Name the property used in 100 + 0 = 100
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Additive inverse
Multiplicative inverse
Additive identity
Multiplicative identity
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