Mathematics MCQs Chapter 2 - LearnoSpot by PLS

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Created on January 19, 2022

Ch 2 Sets, Functions and Groups

1 / 31

The graph of linear function is :

Circle

straight line

parabola

triangle

2 / 31

If ? ⊆ ? then ?(? ∩ ?) =

?(?). ?(?)

?(?)

?(?) + ?(?)

?(?)

3 / 31

The set of odd numbers between 1 and 9 are

{1,3,5,7}

{1,3,5,7,9}

{3,5,7,9}

{3,5,7}

4 / 31

In a proposition if ? → ? ???? ? → ? is called

None

Inverse of ? → ?

converse of ? → ?

contrapositive of ? → ?

5 / 31

Which of the following is true:

all of these

? ⊂ ?

6 / 31

Every recurring non terminating decimal represents

None

?′

7 / 31

A set is a collection of objects which are

Well defined and distinct

identical

Well defined

not defined

8 / 31

The number of all subsets of a set having three elements is:

9 / 31

Total number of subsets that can be formed from the set {?, ?, ?} is

10 / 31

Squaring a number is a:

relation

binary operation

Function

Unary operation

11 / 31

Identity element in (?, . ) is:

(1,0)

(0,1)

(1,1)

(0,0)

12 / 31

A diagram which represents a set is called______

Venn’s

None

Argand

Plane

13 / 31

Every function is:

Relation

one to one

none of these

inverse function

14 / 31

Inverse of any element of a group is:

has many inverses

Not unique

none of these

unique

15 / 31

The number of all subsets of a set having three elements is:

16 / 31

17 / 31

A compound proposition which is always true is called:

absurdity

contradiction

Tautology

contingency

18 / 31

Squaring a number is a:

Unary operation

binary operation

Function

relation

19 / 31

A diagram which represents a set is called______

Argand

Plane

None

Venn’s

20 / 31

A compound proposition which is always neither true nor false is called:

Tautology

absurdity

contingency

contradiction

21 / 31

. Truth set of a tautology is

True

False

Universal set

22 / 31

Inverse of a line is :

not defined

A line

a point

a parabola

23 / 31

Which of the following is not a binary operation :

√

–

24 / 31

A set is a collection of objects which are

Well defined

identical

Well defined and distinct

not defined

25 / 31

The graph of linear function is :

Circle

straight line

triangle

parabola

26 / 31

Inverse of any element of a group is:

Not unique

has many inverses

none of these

unique

27 / 31

Every function is:

Relation

none of these

inverse function

one to one

28 / 31

The set of odd numbers between 1 and 9 are

{3,5,7}

{1,3,5,7}

{3,5,7,9}

{1,3,5,7,9}

29 / 31

A compound proposition which is always wrong is called:

contingency

absurdity

Tautology

contradiction

30 / 31

The symbol which is used to denote negation of a proposition is

→

∨

∧

31 / 31

An onto function is also called:

Surjective

Bijective

Injective

Inverse

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