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ECAT Pre General Science Mathematics Chapter 4 Functions & Groups Online Test MCQs With Answers
Question # 1
Which of the following represent injuctive function
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Question # 2
A semi-group having an identity is called a
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groupoid
non-commutative
abelian
monoid
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Question # 3
The set {E,0}, is closed under (ordinary)
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multiplication
addition
subtraction
division
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Question # 4
Addition is not operation on
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Natural numbers
Even numbers
odd numbers
set of integers
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Question # 5
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 # 6
(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 # 7
the function y = mx+c is, called linear function, because
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it has only two variables
it has one varible
its graphs is straight line
its graphs is circle
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Question # 8
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 # 9
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 # 10
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 # 11
The graph of a constant line is
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vertical line
parabola
circle
horizontal line
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Question # 12
The set of second elements of the ordered pairs forming a relation called a
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Domain
Range
Function
Relation
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Question # 13
ax+by+c = 0, represent a
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circle
parabola
straight line
quadratic circle
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Question # 14
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Question # 15
If no two elements of ordered pairs of a function from A onto B are the same, then it is called
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surjective
injuctive
bijective
on to
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Question # 16
Let A and B be two non-empty sets, then any subset of the cartesian product AxB is called a
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function
domain
range
binary relation
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Question # 17
A function from A to B is called on-to function, if its range is
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A
B
A and B
neither A nor B
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Question # 18
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bijective function
into function
onto function
surjective
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Question # 19
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 # 20
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 # 21
The identity function is
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surjective
injuctive
bijective
into
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Question # 22
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 # 23
Which of the following notation defines AxB
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Question # 24
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Question # 25
Which of the following diagrams represent into function?
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Question # 26
The set of cartesian product A x B consists of
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Domain
Range
Binary relation
Ordered pair
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Question # 27
Function is a special type of
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relation
ordered pairs
cartesian product
sets
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Question # 28
A function f from A to B can be written as
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Question # 29
Which of the following diagrams represent bijective function?
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Question # 30
The function denoted by 1/f called the
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Reciprocal function
Inverse function
Constant function
Reverse function
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