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ECAT Pre General Science Mathematics Chapter 2 Set, Functions and Groups Online Test MCQs With Answers
Question # 1
Which of the following statement is true?
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A set is a collection of non-empty object
A set is a collection of only numbers
a set is any collection of things
a set is well-defined collection of objects
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Question # 2
Group of none-singular matrices under multiplication is
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None-Abelian group
Semi group
Abelian group
None of these
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Question # 3
If D = {a} , the P(D) =
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{a}
∅
{∅,{a}}
{∅,a}
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Question # 4
{x|x∈R∧x≠x} is a
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Infinite set
Null set
Finite set
None of these
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Question # 5
If A = {x/x is a positive integer and 4≤x<23}, then A=
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{1,2,3,4,5,6,7}
{4,5,6...........22}
{1,2,3,.........23}
{1,2,3,4,5}
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Question # 6
Write down the power set of {9, 11}
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Question # 7
The set { {a,b} } is
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Infinite set
Singleton set
Two points set
Empty set
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Question # 8
A function whose range is just one elements is called
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One-one function
Constant function
Onto function
Identity function
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Question # 9
For any set X, X∪X is
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X
X'
Φ
Universal Set
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Question # 10
The set of complex numbers forms a group under the binary operation of
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Addition
Multiplication
Division
Subtraction
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Question # 11
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Question # 12
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A
A'
U
U'
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Question # 13
The multiplicative inverse of -1 in the set {1-, 1} is
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1
-1
0
Does not exist
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Question # 14
If A and B are two sets then any subset R of A x B is called
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relation on A
relation on B
relation from A to B
relation from B to A
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Question # 15
If A is a subset of B and B contains at least one element which is not an element of A, then A is said to be
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Improper subset of B
Super set of B
Proper subset of B
None of these
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Question # 16
Choose an answer
none of these
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Question # 17
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A
A'
U
A A'
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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
The number of proper subset of A ={a.b.c.d} is
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3
6
8
15
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Question # 20
The function f{(x, y) | y = ax
2
+ bx + c} is
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One-one function
Constant function
Onto function
Quadratic function
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Question # 21
The set {Z\ {0} } is group w.r.t
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Addition
Multiplication
Division
Subtraction
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Question # 22
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 # 23
Choose an answer
3
1
2
4
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Question # 24
The identity elements with respect to subtraction is
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0
1
-1
Does not exist
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Question # 25
The set of complex numbers forms
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Commutative group w.r.t addition
Commutative group w.r.t multiplication
Commutative group w.r.t division
Non commutative group w.r.t addition
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Question # 26
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 # 27
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 # 28
A∪(A∪B)= --------------------
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B
A
A∪B
None of these
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Question # 29
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Question # 30
If A is a set then any subset R of A x A is called
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relation on A
relation on B
relation from A to B
relation from B to A
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Question # 31
Choose an answer
A onto B
both a & c
A into B
none of these
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