Question # 1

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

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a constant function

linear function

quadratic funtion

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

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An empty set

Universal set

A singleton set

None of these

{x|x∈R∧x≠x} is a

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Infinite set

Null set

Finite set

None of these

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-x

Infinite set

{-4, 4}

None of these

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

A conditional is regarded as false only when the antecedent is true and consequent is

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True

False

Known

Unknown

The identity elements with respect to subtraction is

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0

1

-1

Does not exist

The set of the first elements of the orders pairs forming a relations is called its

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Relation in B

Range

Domain

Relation in A

(A∪B)∪C= --------------------------

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A∩B(B∪C)

A∪(B∪C)

A∪(B∩C)

None of these

(A ∩ B)c =

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A∩ B

(A ∪ B)c

Ac∪Bc

Φ

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

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Relation in B

Range

Domain

Relation In A

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

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If A is a set then any subset R of A x A is called

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relation on A

relation on B

relation from A to B

relation from B to A

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

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Equal sets

Equivalent sets

Over lapping sets

None of these

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

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10

32

16

5

The set (Z,+) forms a group

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Forms a group w.r.t addition

Non commutative group w.r.t multiplication

Forms a group w.r.t multiplication

Doesn't form a group

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

If there is one-one correspondence between A and B, then we write.

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A = B

A⊆ B

A⊇ B

A ∼ B

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

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)

Which of the following has the same value as i113

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i

-1

-i

1

Multiplicative inverse of "1" is

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+- 1

0

1

None of these

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Biconditional

Implication

Antecedent

Hypothesis

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Which of the following is the definition of singleton

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The objects in a set

A set having no element

A set having no subset

None of these

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

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A

∅

Ac

U

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A = C

A = B

B = C

None of these

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

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{-4}

{0}

{}

None of these

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Mathematics ECAT Pre Engineering Chapter 2 Set, Functions and Groups Online Test MCQs With Answers

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