Question # 1

Z is a

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Infinite set

Finite set

Singleton set

Set of all integers

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For a set A, A∪Ac= ---------------------

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A

∅

Ac

U

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A

B

U

None of these

If P = {x/x = p/q where p,q∈ Z and q≠ 0}, then P is the set of

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Irrational numbers

Even numbers

Rational numbers

Whole numbers

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

If A = {2m/m³= 8 , m€ Z} then A =

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{1,8,27}

{4}

(2,4,6}

{2,16,54}

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A

A'

U

U'

If z1 = 2 + 6i and z2 = 3 + 7i then which expression defines the product of z1 and z2

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36 +(-32)i

-36+32i

6+(-11)i

0, +(-12)i

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

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10

32

16

5

Z is a group under

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Subtraction

Multiplication

Addition

None of these

The identity element of a set X with respect to intersection in P(x) is

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X

Does not exist

∅

None of these

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

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Function on B

Range

Domain

A into B

{1, 2, 3} is _____

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an infinite set

A finite set

A singleton set

Universal set

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The set of integers is a subset of

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The set of natural numbers

The set of whole numbers

The set of prime numbers

The set of rational numbers

A = B if

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A is equivalent to B

(A∪B)∪C= --------------------------

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A∩B(B∪C)

A∪(B∪C)

A∪(B∩C)

None of these

The set Q

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Forms a group under addition

Does not form a group

Contains no additive indentity

Contains no additive inverse

For any set B, BUB' is

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Is set B

Set B'

Universal set

None of these

The set of whole numbers is subset of

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The set on integers

The set of natural numbers

{1, 3, 5, 7, ....}

The set of prime numbers

To each element of a group there corresponds ............. inverse element

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Two

One

No

Three

If D = {a} , the P(D) =

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{a}

∅

{∅,{a}}

{∅,a}

The set {-1, 1} is closed under the binary operation of

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Addition

Multiplication

Subtraction

Division

The set (Z, +) forms a group

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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

The set (Q, .)

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Forms a group

Does not form a group

Contains no additive identity

Contains no additive inverse

The geometrical representation of a linear function is

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Circle

Parabola

Straight lie

None of these

The set {x|x∈N∧x-4=0} in tabular form is

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{-4}

{0}

{}

None of these

0 is a symbol of

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singleton set

Empty set

Equivalent set

Infinite set

Let A,B, and C be any sets such that A∪B = A∪C and A∩B = A∩C then

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A≠ C

B = C

A = B

A≠ B

If A ⊆ B then A ∪ B is

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A

B

A'

A ∩B

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