Question # 1

Which of the following is surjective

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A semi-group having an identity is called a

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groupoid

non-commutative

abelian

monoid

Extraction of square root of a given number is a

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unary operation

binary operation

group

inverse function

Negation of a given number is an example of

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Binary operation

group

unary operation

function

Which of the following notation defines AxB

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The group of a constant line is

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Vertical line

Parabola

Circle

Horizontal line

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

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A

B

∅

r

The set of second elements of the ordered pairs forming a relation called a

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Domain

Range

Function

Relation

Identity element, if it exists, is

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inverse

unique

commutative

associative

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bijective function

into function

onto function

surjective

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

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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injuctive as well as surjective

both onto and into

one - one and into

only (1 - 1)

A function f from A to B can be written as

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ax+by+c = 0, represent a

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circle

parabola

straight line

quadratic circle

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

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A

B

D

r

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

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Domain

Range

Ordered paris

Relation

(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 inverse of a line is

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inverse

Line

quadratic

Circle

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

The extraction of a cube root of a given number is a

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Binary operation

Unary operation

group

multiplicative inverse

The function denoted by 1/f called the

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Reciprocal function

Inverse function

Constant function

Reverse function

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

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