Question # 1

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

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Addition

none of these

Division

Subtraction

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 = B

B = C

A≠ C

A ≠ B

If A∩B=B, then n(A∩B) is equal to

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n(a)

n(a)+n(c)

n(c)

None of these

Which of the following sets in infinite

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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

Multiplicative inverse of 0 is

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0

1

+-1

Does not exist

The number of different ways of describing a set is

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One

Two

Three

Four

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

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Addition

Multiplication

Subtraction

Division

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Addition

Multiplication

Division

Both addition and multiplication

Decimal part of irrational number is

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Terminating

Repeating only

Neither repeating nor terminating

Repeating and terminating

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

For any set B, BUB' is

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Is set B

Set B'

Universal set

None of these

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3

1

2

4

The function f{(x, y) | y = ax²+ bx + c} is

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One-one function

Constant function

Onto function

Quadratic function

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

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1

-1

±1

0

Does not exist

If C={p/p < 18, p is a prime number}, then C =

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{2,3,4,.........17}

{2,4,6,8................16}

{1,3,5,7,9,11,13,15,17}

{3,6,9,12,15}

If A⊆ B, and B is a finite set, then

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n (a) < n(B)

n(B)<(A)

n(A)≤ n (B)

n(A)≥ n(B)

For any set X, X∪X is

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X

X'

Φ

Universal Set

Given X,Y are any two sets such that number of elements in set X = 28, number of elements in set Y = 28, and number of elements in set X∪Y = 54, then number of elements in set X ∩ Y =

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4

3

2

1

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The negation of given number is a

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Binary operation

Unary operation

Relation

None of these

To each element of a group there corresponds ______ inverse element

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Two

One

No

Three

Onto function is also called

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Binjective function

Injective function

Surjechive function

None of these

If S = {3,6,9,12.......}, then

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S = Four multiples of 3

S = Set of even numbers

S = Set of prime numbers

S = All multiples of 3

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The number of subset of {0} is

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1

2

3

None

Empty set is

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Not the member of real numbers

Infinite set

Finite set

Not subset of every set

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

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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 set S contains "n" elements then P (S) has ...... number of elements

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2ⁿ

2²ⁿ

2 . n

n²

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

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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

A monoid (G, *) is said to be group if

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have identity element

is commutative

have inverse of each element

None of these

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