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ECAT Mathematics Chapter 1 Number System Online Test MCQs With Answers
Question # 1
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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 # 2
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Question # 3
i
2
=
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1
2
-1
0
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Question # 4
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 # 5
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 # 6
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Principle of equality of fractions
Rule for product of fraction
Rule for quotient of fraction
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Question # 7
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Question # 8
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 # 9
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1
3
2-i
-1
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Question # 10
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(a + b)c = a . c + bc
a + b = b + a
(a + b) + c = a + (b + c)
a(b+ c) = ab + ac
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Question # 11
√-1 b=
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b
2
2b
None of these
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Question # 12
The additive inverse of 0 is
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1
-1
0
Does not exist
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Question # 13
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(x, y)
(kx, y)
(x, ky)
(kx, ky)
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Question # 14
14 is not a
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Prime number
Whole number
Even number
Real number
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Question # 15
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Question # 16
∀ z ∈ C, multipliucative is
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(1,1)
(1,0)
(0,1)
None of these
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Question # 17
3/4 is ______
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An odd number
An even number
A natural number
A rational number
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Question # 18
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Question # 19
The square root of every incomplete square is an
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Rational numbers
Even numbers
odd numbers
Irrational numbers
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Question # 20
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Question # 21
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Commutative property of addition
Closure property of addition
Additive inverse
Associative property w.r.t. to addition
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Question # 22
It is not possible to find the exact value of
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π
√9
∛27
√1
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Question # 23
2/9,5/7∈ R,(2│9)(5│7)=10/63∈R this property is called
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Associative property
Identity property
Commutative property
Closure property w.r.t multiplication
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Question # 24
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A rational number
A natural number
An irrational number
An integer
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Question # 25
The multiplicative inverse of 1 - 2i is
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Question # 26
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Closure law of addition
Closure law of multiplication
Commutative law of addition
Commutative law of multiplication
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Question # 27
In R, the multiplicative inverse of a is
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0
1
-a
1/a
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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
∀x,y∈R and x> 0 , y>0, if x > y
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None of these
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Question # 30
(a,b) +(-a,-b) =
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(0,0)
(a,b)
(-a,-b)
(1,1)
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