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Mathematics ECAT Pre Engineering Chapter 4 Functions and Groups Online Test MCQs With Answers
Question # 1
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bijective function
into function
onto function
surjective
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Question # 2
A functionâ« will have an inverse function if and only if it is a
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onto function
into function
Constant
one-one function
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Question # 3
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 # 4
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similar images
distinct images
similar range
option a and c
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Question # 5
Which of the following notation defines AxB
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Question # 6
If no two elements of ordered pair of a functions from A into B are equal, then it is called.
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Surjective
Injuctive
Bijective
Onto
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Question # 7
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 # 8
If range of a function f is B, then the function is
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surjective
injuctive
bijective
into
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Question # 9
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Question # 10
A relation a into B in which Domain is not equal to a, is called.
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Into function
on to function
None of these
Surjective
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Question # 11
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 # 12
ax+by+c = 0, represent a
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circle
parabola
straight line
quadratic circle
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Question # 13
A function f from A to B can be written as
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Question # 14
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 # 15
Function is a special type of
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relation
ordered pairs
Cartesian product
Set
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Question # 16
The group of a constant line is
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Vertical line
Parabola
Circle
Horizontal line
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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
Which of the following diagrams represent bijective function?
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Question # 19
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 # 20
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 # 21
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injuctive as well as surjective
both onto and into
one - one and into
only (1 - 1)
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Question # 22
Which of the following is surjective
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Question # 23
Identity element, if it exists, is
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inverse
unique
commutative
associative
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Question # 24
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 # 25
Addition is not operation on
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Natural numbers
Even numbers
odd numbers
set of integers
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Question # 26
Function is a special type of
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relation
ordered pairs
cartesian product
sets
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Question # 27
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 # 28
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 # 29
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 # 30
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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