Question # 1

Which symbolic notation represent unary operation ?

Choose an answer

-

∨

∧

⇔

{x|x∈R∧x≠x} is a

Choose an answer

Infinite set

Null set

Finite set

None of these

If a 1-1 correspondence can be established b/w two sets A and B, then they are called

Choose an answer

Equal sets

Equivalent sets

Over lapping sets

None of these

Choose an answer

The set {1,-1, i, -i} form a group under

Choose an answer

Addition

Multiplication

Subtraction

None

Choose an answer

1/x

-x

2x

0.5 x

Choose an answer

Singleton set

A set with two points

Empty set

None of these

Φ set is the _______ of all sets

Choose an answer

Subset

Union

Universal

Intersection

The set of complex numbers forms a group under the binary operation of

Choose an answer

Addition

none of these

Division

Subtraction

Which of the following is the definition of singleton

Choose an answer

The objects in a set

A set having no element

A set having no subset

None of these

If x = 1/x for x ∈ R then the value of x is

Choose an answer

±1

0

2

4

For any two sets A and, A ⊆ B if

Choose an answer

x ∈ A ⇒ x ∈ B

x ∉ A ⇒ x ∉ B

x ∈ A ⇒ x ∉ B

None of these

The set {Z\ {0} } is group w.r.t

Choose an answer

Addition

Multiplication

Division

Subtraction

The set (Z, +) forms a group

Choose an answer

Forms a group w.r.t addition

Forms a group w.r.t multiplication

Non commutative group w.r.t multiplication

Doesn't form a group

G = {e, a, b, c} is an Abelian group with e as identity element The order of the other elements are

Choose an answer

2,2,2

3,3,3

2,2,4

2,3,4

The number of different ways of describing a set is

Choose an answer

One

Two

Three

Four

If A ⊆ B then A ∪ B is

Choose an answer

A

B

A'

A ∩B

The set {1,-1,i,-i}

Choose an answer

Form a group w.r.t addition

Form a group w.r.t multiplication

Does not form a group w.r.t multiplication

Not closed under multiplication

If A = {2m/m³= 8 , m€ Z} then A =

Choose an answer

{1,8,27}

{4}

(2,4,6}

{2,16,54}

Choose an answer

Evert element of A is in B

Every element of B is in A

Every element of A is in B'

Every element of A is in A

Which of the following sets in infinite

Choose an answer

The set of students of your class

The set of all schools in Pakistan

The set of natural numbers between 3 and 10

The set of rational numbers between 3 and 10

More Classes

Other Links

ECAT Mathematics Chapter 23 MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer