Question # 1

The set of complex numbers forms

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Commutative group w.r.t addition

Commutative group w.r.t multiplication

Commutative group w.r.t division

Non commutative group w.r.t addition

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Multiplicative inverse of 0 is

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0

1

+-1

Does not exist

Group of none-singular matrices under multiplication is

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None-Abelian group

Semi group

Abelian group

None of these

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

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2, 2, 2

3, 3, 3

2, 2, 4

2, 3, 4

Given X.Y are any two sets such that number of elements in X = 18, number of elements in set Y = 24,and number of elements in set X∪ Y =40,then number of elements in set x∩ Y =

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3

1

2

4

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

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Addition

Multiplication

Subtraction

None

{0} is a

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Empty set

Singleton set

Zero set

Null Set

The multiplicative inverse of -1 in the set {1-, 1} is

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1

-1

0

Does not exist

A∪(A∪B)= --------------------

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B

A

A∪B

None of these

The total number of subsets that can be formed out of the set {a, b, c} is

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1

4

8

12

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A conjunction of two statement p and q is true only if

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p is true

q is true

Both p and q are true

both p and q are false

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The set {-1,1} is

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Group under the multiplication

Group under addition

Does not form a group

Contains no identity element

The multiplicative inverse of x such that x = 0 is

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-x

does not exist

1/x

0

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Singleton set

A set with two points

Empty set

None of these

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3

1

2

4

The set of all positive even integers is

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Not a group

A group w.r.t subtraction

A group w.r.t division

A group w.r.t multiplication

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A = C

A = B

B = C

None of these

A function whose range is just one elements is called

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One-one function

Constant function

Onto function

Identity function

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The number of subsets of B = {1,2,3,4,5}

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10

32

16

5

Multiplicative inverse of "1" is

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0

-1

1

{0, 1}

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A

B

U

None of these

Φset is the ______ of all sets?

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Subset

Union

Universal

Intersection

The set of real numbers is a subset of

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The set of natural numbers

The set of rational numbers

The set of integers

The set of complex numbers

Identity w.r.t intersection in a power set of any set is

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∅

Set itself

Singleton set

{0}

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

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Addition

Multiplication

Division

Subtraction

Decimal part of irrational number is

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Terminating

Repeating only

Neither repeating nor terminating

Repeating and terminating

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None of these

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