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ECAT Pre General Science Mathematics Chapter 2 Set, Functions and Groups Online Test MCQs With Answers
Question # 1
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 # 2
If p and q are two statements then their conjunction is denoted by
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Question # 3
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 # 4
A statement which is either true or false is called
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Induction
Deduction
Propositicon
Logic
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Question # 5
If p and q are two statements then their biconditional 'p if q' is denoted by
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Question # 6
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None of these
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Question # 7
If C={p/p < 18, p is a prime number}, then C =
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{2,3,4,.........17}
{2,4,6,8................16}
{1,3,5,7,9,11,13,15,17}
{3,6,9,12,15}
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Question # 8
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 # 9
Multiplicative inverse of "1" is
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0
-1
1
{0, 1}
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Question # 10
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An empty set
Universal set
A singleton set
None of these
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Question # 11
The graph of a quadratic function is
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Circle
Ellipse
Parabola
Hexagon
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Question # 12
A set having only one element is called
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An empty set
Universal set
A singleton set
A power set
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Question # 13
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Question # 14
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A finite set
An infinite set
An empty set
None of these
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Question # 15
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 # 16
The multiplicative inverse of x such that x = 0 is
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-x
does not exist
1/x
0
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Question # 17
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A = B
B = C
A = C
None of these
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Question # 18
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 # 19
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 # 20
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 # 21
Every subset of a finite set is
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Disjoint
Null
Finite
Infinite
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Question # 22
A conditional "if p then q" is denoted by
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Question # 23
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A
A'
U
None of these
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Question # 24
The set (Q, .)
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Forms a group
Does not form a group
Contains no additive identity
Contains no additive inverse
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Question # 25
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 # 26
Which of the following is the subset of all sets?
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Question # 27
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 # 28
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 # 29
{1, 2, 3, 4,.....} is set of ______
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Natural numbers
Whole numbers
Integers
Rational numbers
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Question # 30
Power set of difference set N-W is
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Empty set
Infinite set
Singleton set
{0,∅}
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Question # 31
The multiplicative inverse of -1 in the set {1-, 1} is
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1
-1
+-1
0
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