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Mathematics ECAT Pre Engineering Chapter 1 Number System Online Test MCQs With Answers
Question # 1
The symbol of irrational is
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W
N
Q
Q'
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Question # 2
0.25 is ______
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An irrational number
A natural number
A prime number
A rational number
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Question # 3
i
101
=
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i
i
2
-i
-1
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Question # 4
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additive property
multiplicative property
additive inverse
additive identity
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Question # 5
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Symmetric property
Cancellation property w.r.t. multiplication
Reflexive property
Transitive property
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Question # 6
∀ z ∈ C, multipliucative is
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(1,1)
(1,0)
(0,1)
None of these
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Question # 7
The value of x, and y, when (x + iy)
2
= 5 + 4i
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X = 2, y = 1
X = -2, y = 1
X = 2, y = -1
X = 2, y = 2
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Question # 8
Name the property used in 4.1 + (-4.1) = 0
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Additive inverse
Multiplication inverse
Additive identity
Multiplication identity
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Question # 9
The equation |x +4| = x has solution
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x = -2
x = 2
x = -4
x = 4
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Question # 10
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Rational
Irrational
Natural
Odd
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Question # 11
Every prime number is also
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Rational number
Even number
Irrational number
Multiple of two numbers
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Question # 12
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Rule of quotient of fraction
Golden rule of fraction
Rule for product of fraction
Principle for equality of fraction
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Question # 13
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Question # 14
Decimal part of irrational number is
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Terminating
Repeating only
Neither repeating nor terminating
Repeating and terminating
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Question # 15
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Question # 16
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Question # 17
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Question # 18
In R the number of identity elements w.r.t.'.' is
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One
Two
Three
Four
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Question # 19
π is the ration of
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Area of a circle to its diameter
Area of a circle to its radius
Circumference of a circle to its diameter
Circumference of circle to its radius
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Question # 20
The additive inverse of 1 is
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1
-1
0
Does not exist
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Question # 21
It is not possible to find the exact value of
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π
√9
∛27
√1
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Question # 22
The set {0,-1} hold closure property under
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Addition
Both a & c
Multiplication
None of these
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Question # 23
∀ a ε R ∃ o ε R such that a + v = 0 + a = a is property of
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Commutative law of addition
Associative law of addition
Additive identity
Additive inverse
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Question # 24
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-3 -2i
3 +2i
1 + 2i
1 - 2i
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Question # 25
The sum of complex number (a,b) and (c,d) is
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Question # 26
Every real number is
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A complex number
A rational number
A natural number
A prime number
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Question # 27
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Question # 28
In R the right cancellation property w.r.t. addition is
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Question # 29
a.a
-1
= a
-1
.a = 1 is a
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Commutative law of multiplication
Multiplication identity
Associative law of multiplication
Multiplication inverse
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Question # 30
What is the conjugate of -6 -i?
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-6 +i
6+i
-6 -i
6 -i
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Question # 31
a >b ⇒a +c >b +c is known as
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Trichotomy property
Additive property of inequality
Transitive property
Multiplicative property
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