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ECAT Mathematics Chapter 2 Set Function and Groups Online Test MCQs With Answers
Question # 1
{1, 2, 3, 4,.....} is set of ______
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Natural numbers
Whole numbers
Integers
Rational numbers
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Question # 2
The set Q
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Forms a group under addition
Does not form a group
Contains no additive indentity
Contains no additive inverse
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Question # 3
If f:A→B is an injective function and second elements of no two of its ordered pairs are equal, then f is called
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1-1 and onto
Bijective
1-1 and into
None of these
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Question # 4
The total number of subsets that can be formed out of the set {a, b, c} is
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1
4
8
12
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Question # 5
The complement of set A relative to universal set U is the set
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Question # 6
G = {e, a, b, c} is an Abelian group with e as identity element The order of the other elements are
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2,2,2
3,3,3
2,2,4
2,3,4
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Question # 7
If a set S contains "n" elements then P (S) has ...... number of elements
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2
n
2
2n
2 . n
n
2
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Question # 8
The set of natural numbers is a subset of
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{1, 2, 3, .... 100}
The set of whole numbers
{2, 4, 6, 8, .....}
None of these
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Question # 9
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Addition
Multiplication
Division
Both addition and multiplication
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Question # 10
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Question # 11
The multiplicative inverse of x such that x = 0 is
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-x
Does not exist
1/x
±1
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Question # 12
The set of real numbers is a subset of
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The set of natural numbers
The set of rational numbers
The set of integers
The set of complex numbers
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Question # 13
The set of complex numbers forms a group under the binary operation of
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Addition
none of these
Division
Subtraction
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Question # 14
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Singleton set
A set with two points
Empty set
None of these
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Question # 15
The set of integer is
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Finite group
A group w.r.t addition
A group w.r.t multiplication
Not a group
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Question # 16
A conditional is regarded as false only when the antecedent is true and consequent is
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True
False
Known
Unknown
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Question # 17
The number of subsets of B = {1,2,3,4,5}
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10
32
16
5
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Question # 18
{x : xε Z and x < 1} is
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Singleton set
A set with two points
Empty set
None of these
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Question # 19
If A=B, then
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A⊂B and B⊂A
A⊆B and B⊈A
A⊆B and B⊆A
None of these
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Question # 20
Multiplicative inverse of 0 is
Choose an answer
0
1
+-1
Does not exist
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Question # 21
If B⊆ A, then complement of B in A is = -----------------------
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A-B
A∩B
B-A
A∪B
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Question # 22
Choose an answer
A
B
A'
None of these
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Question # 23
Choose an answer
1
12
5
29
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Question # 24
A conditional "if p then q" is denoted by
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Question # 25
The set of the first elements of the ordered pairs forming a relation is called its
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Function on B
Range
Domain
A into B
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Question # 26
The complement of set A relative to universal set U is the set
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{x / x∈ A∧ x∈ U}
{x / x∉ A∧ x ∈ U}
{x / x∈ A and x ∉ U}
A-U
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Question # 27
What is the number of elements of the power set of { }
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0
1
2
3
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Question # 28
A = B iff
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All elements of A also the elements of B
A and B should be singleton
A and B have the same number of elements
If both have the same element
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Question # 29
For a set A, A∪Ac= ---------------------
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A
∅
Ac
U
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Question # 30
Choose an answer
A = C
A = B
B = C
None of these
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Question # 31
The graph of a quadratic function is
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Circle
Ellipse
Parabola
Hexagon
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