Question # 1

N is closed with respect to ordinary

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addition

multiplication

addition and multiplication

division

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

The set of first elements of the ordered pairs forming the relation is called its

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domain

range

ordered paris

relation

The identity function is

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surjective

injuctive

bijective

into

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

mⁿ

m x n

m + n

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

Which of the following diagrams represent into function?

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Extraction of square root of a given number is a

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unary operation

binary operation

group

inverse function

If range of a function f is B, then the function is

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surjective

injuctive

bijective

into

Addition is not operation on

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Natural numbers

Even numbers

odd numbers

set of integers

Identity element, if it exists, is

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inverse

unique

commutative

associative

Function is a special type of

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relation

ordered pairs

cartesian product

sets

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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similar images

distinct images

similar range

option a and c

If A is non-empty set, any subset of A x A is called a relation in

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A

B

∅

r

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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bijective function

into function

onto function

surjective

Which of the following notation defines AxB

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A semi-group having an identity is called a

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groupoid

non-commutative

abelian

monoid

The set {E,0}, is closed under (ordinary)

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multiplication

addition

subtraction

division

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

Negation of a given number is an example of

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Binary operation

group

unary operation

function

Such a function which is (1 -1) is called

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surjective

injuctive

bijective

into

The net of cartesian product AxB consists of

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domain

range

binary relation

ordered pair

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

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

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

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

A relation A into B in which Domain is not equal to A, is called

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into function

onto function

None of these

surjective

The graph of a constant line is

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vertical line

parabola

circle

horizontal line

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ECAT Pre General Science Mathematics Chapter 4 Functions & Groups Online Test MCQs With Answers

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