Question # 1

Extraction of square root of a given number is a

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unary operation

binary operation

group

inverse function

(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

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

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multiplication

addition

subtraction

division

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injuctive as well as surjective

both onto and into

one - one and into

only (1 - 1)

The net of cartesian product AxB consists of

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domain

range

binary relation

ordered pair

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

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A

B

D

r

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

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surjective

injuctive

bijective

into

The identity function is

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surjective

injuctive

bijective

into

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

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surjective

injuctive

bijective

into

Negation of a given number is an example of

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Binary operation

group

unary operation

function

A function f from A to B can be written as

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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

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

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A

B

∅

r

Which of the following notation defines AxB

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Addition is not operation on

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Natural numbers

Even numbers

odd numbers

set of integers

There will be no inverse if the function is

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one -to - one

One to many

onto

into

A semi-group having an identity is called a

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groupoid

non-commutative

abelian

monoid

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bijective function

into function

onto function

surjective

Which of the following represent injuctive function

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similar images

distinct images

similar range

option a and c

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

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

onto function

None of these

surjective

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Mathematics ECAT Pre Engineering Chapter 4 Functions and Groups Online Test MCQs With Answers

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