Question # 1

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

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surjective

injuctive

bijective

into

A semi-group having an identity is called a

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groupoid

non-commutative

abelian

monoid

The function denoted by 1/f called the

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Reciprocal function

Inverse function

Constant function

Reverse function

The identity function is

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surjective

injuctive

bijective

into

The group of a constant line is

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Vertical line

Parabola

Circle

Horizontal line

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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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

Extraction of square root of a given number is a

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unary operation

binary operation

group

inverse function

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

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domain

range

ordered paris

relation

ax+by+c = 0 , represents a

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Circle

Parabola

Straight line

Quadratic circle

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

Function is a special type of

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relation

ordered pairs

cartesian product

sets

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

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

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multiplication

addition

subtraction

division

Which of the following is surjective

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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 are the same, then it is called.

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Surjective

Injuctive

Bijective

on to

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

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Binary operation

Unary operation

group

multiplicative inverse

N is closed with respect to ordinary

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addition

multiplication

addition and multiplication

division

The set of cartesian product A x B consists of

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Domain

Range

Binary relation

Ordered pair

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

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Domain

Range

Function

Relation

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

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

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

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