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ECAT Pre General Science Mathematics Chapter 2 Set, Functions and Groups Online Test MCQs With Answers
Question # 1
A conditional "if p then q" is denoted by
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Question # 2
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n(A)
n(B)
0
1
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Question # 3
Under multiplication, solution set of is
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Groupoid
Abelian group
Semi group
All of these
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Question # 4
The set of even prime numbers is
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(2,4,6,8,10}
{2,4,6,8,10,12}
{1,3,5,7,9}
{2}
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Question # 5
Onto function is also called
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Binjective function
Injective function
Surjechive function
None of these
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Question # 6
If A∩B=B, then n(A∩B) is equal to
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n(a)
n(a)+n(c)
n(c)
None of these
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Question # 7
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 # 8
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A = B
B = C
A = C
None of these
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Question # 9
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A
A'
U
None of these
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Question # 10
If A = {2m/m
3
= 8 , m€ Z} then A =
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{1,8,27}
{4}
(2,4,6}
{2,16,54}
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Question # 11
The set {-1,1} is closed under the binary operation of
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Addition
Multiplication
Subtraction
Division
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Question # 12
The set of all positive even integers is
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Not a group
A group w.r.t subtraction
A group w.r.t division
A group w.r.t multiplication
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Question # 13
If B ={x/x€ Z ^ - 3 < x < 6}, then n (B) =
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5
{-3,-2,-1,0,1,2,3,4,5,6}
8
9
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Question # 14
{1, 2, 3} is _____
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an infinite set
A finite set
A singleton set
Universal set
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Question # 15
Which of the following is the definition of singleton
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The objects in a set
A set having no element
A set having no subset
None of these
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Question # 16
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 # 17
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Question # 18
Two sets A and B are said to be disjoint if
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Question # 19
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Addition
Subtraction
Multiplication
None of these
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Question # 20
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 # 21
{0} is a
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Empty set
Singleton set
Zero set
Null Set
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Question # 22
The statement that a group can have more than one identity elements is
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True
False
Fallacious
Some times true
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Question # 23
If we have a statement "if p then q" then q is called
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Conclusion
Implication
Unknown
Hypothesis
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Question # 24
The logic in which every statement is regarded as true or false and no other possibility is called
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Aristotelian login
Inductive logic
Non-Aristotelian logic
None of these
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Question # 25
{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 # 26
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 # 27
A monoid (G, *) is said to be group if
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have identity element
is commutative
have inverse of each element
None of these
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Question # 28
The set (Z,+) forms a group
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Forms a group w.r.t addition
Non commutative group w.r.t multiplication
Forms a group w.r.t multiplication
Doesn't form a group
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Question # 29
The set of the first elements of the orders pairs forming a relations is called its
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Relation in B
Range
Domain
Relation in A
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Question # 30
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A
B
U
None of these
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Question # 31
The set {-1, 1} is
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Group under the multiplication
Group under addition
Does not form a group
Contains no identity element
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