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ECAT Pre General Science Mathematics Chapter 4 Functions & Groups Online Test MCQs With Answers
Question # 1
There will be no inverse if the function is
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one -to - one
One to many
onto
into
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Question # 2
If A is non-empty set, any subset of AxA is called a relation in a
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A
B
D
r
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Question # 3
Which of the following diagrams represent into function?
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Question # 4
Function is a special type of
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relation
ordered pairs
cartesian product
sets
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Question # 5
The set of second elements of the ordered pairs forming a relation is called a
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Domain
range
function
relation
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Question # 6
arb mean
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a is related to b
b is related to a
a is reciprocal of b
a is not related to b
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Question # 7
A semi-group having an identity is called a
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groupoid
non-commutative
abelian
monoid
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Question # 8
Which of the following notation defines AxB
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Question # 9
The set of first elements of the ordered pairs forming the relation is called its
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domain
range
ordered paris
relation
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Question # 10
Function is a special type of
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relation
ordered pairs
Cartesian product
Set
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Question # 11
Extraction of square root of a given number is a
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unary operation
binary operation
group
inverse function
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Question # 12
ax+by+c = 0 , represents a
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Circle
Parabola
Straight line
Quadratic circle
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Question # 13
Such a function which is (1 -1) is called
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surjective
injuctive
bijective
into
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Question # 14
(a,b) = (c,d) if and only if
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a=b and c =d
a = d and b = c
a = c and b = d
a - b = c -d
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Question # 15
If no two elements of ordred pair of a function from A into B are equal, then it is called
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surjective
injuctive
bijective
on to
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Question # 16
If A is non-empty set, any subset of A x A is called a relation in
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A
B
∅
r
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Question # 17
The set of first elements of the ordered pairs forming the relation is called is
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Domain
Range
Ordered paris
Relation
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Question # 18
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Question # 19
If the number of elements in set A is n, and in set B is m, then the number of elements in AxB will
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n
m
m
n
m x n
m + n
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Question # 20
Let A and B be two non-empty sets, then any subset of the cartesian product A x B called a
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Function
Domain
Range
Binary relation
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Question # 21
The set {E,0}, is closed under (ordinary)
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multiplication
addition
subtraction
division
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Question # 22
If no two elements of ordered pairs of a function from A onto are the same, then it is called.
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Surjective
Injuctive
Bijective
on to
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Question # 23
The extraction of a cube root of a given number is a
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Binary operation
Unary operation
group
multiplicative inverse
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Question # 24
(a,b) (c,d) if and only if
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a = b and c =d
a = d and b = c
a = c and b = d
a - b = c - d
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Question # 25
The graph of a constant line is
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vertical line
parabola
circle
horizontal line
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