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ECAT Pre General Science Mathematics Chapter 2 Set, Functions and Groups Online Test MCQs With Answers
Question # 1
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Question # 2
Every subset of a finite set is
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Disjoint
Null
Finite
Infinite
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Question # 3
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An empty set
Universal set
A singleton set
None of these
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Question # 4
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1
12
5
29
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Question # 5
If S = {3,6,9,12.......}, then
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S = Four multiples of 3
S = Set of even numbers
S = Set of prime numbers
S = All multiples of 3
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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
{0} is a
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Empty set
Singleton set
Zero set
Null Set
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Question # 8
If A ⊆ B then A ∪ B is
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A
B
A'
A ∩B
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Question # 9
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 # 10
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 # 11
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A
A'
U
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Question # 12
Power set of X i.e P(X)..........under the binary operation of union U
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Forms a group
Does not form a group
Has no identity element
Infinite set although X is infinite
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Question # 13
The set { {a,b} } is
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Infinite set
Singleton set
Two points set
Empty set
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Question # 14
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Question # 15
The extraction of cube root of a given number is a
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Unary Operation
Binary Operation
Relation
None of these
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Question # 16
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Natural numbers
Whole numbers
Integers
Rational numbers
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Question # 17
If A and B are two sets then intersection of A and B is denoted by
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Question # 18
A statement which is either true or false is called
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Induction
Deduction
Propositicon
Logic
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Question # 19
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 # 20
The set { {a, b} } is
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Infinite set
Singleton set
Two points set
Empty set
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Question # 21
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Addition
Subtraction
Multiplication
None of these
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Question # 22
If E = { } , then P(E)
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∅
{ }
{(2),(4),(6)....}
(∅)
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Question # 23
For any two sets A and, A ⊆ B if
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x ∈ A ⇒ x ∈ B
x ∉ A ⇒ x ∉ B
x ∈ A ⇒ x ∉ B
None of these
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Question # 24
If x = 1/x for x ∈ R then the value of x is
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±1
0
2
4
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Question # 25
Z is a
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Infinite set
Finite set
Singleton set
Set of all integers
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Question # 26
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A
A'
U
None of these
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Question # 27
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 # 28
The negation of given number is a
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Binary operation
Unary operation
Relation
None of these
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Question # 29
Given X.Y are any two sets such that number of elements in X = 18, number of elements in set Y = 24,and number of elements in set X∪ Y =40,then number of elements in set x∩ Y =
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3
1
2
4
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Question # 30
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Question # 31
To each element of a group there corresponds ______ inverse element
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Two
One
No
Three
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