Question # 1

A function whose range is just one element is called

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One-one function

Constant function

Onto function

Identity function

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

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

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Addition

Multiplication

Subtraction

None

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If A is a subset of B and B contains at least one element which is not an element of A, then A is said to be

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Improper subset of B

Super set of B

Proper subset of B

None of these

Power set of difference set N-W is

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Empty set

Infinite set

Singleton set

{0,∅}

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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

Decimal part of irrational number is

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Terminating

Repeating only

Neither repeating nor terminating

Repeating and terminating

Which of the following is the subset of all sets

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Φ

{1,2,3}

{Φ}

{0}

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If a = {2m/2m < 9 ,m€ p} , the (n A) =

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{2,3,4,5,6,7,8}

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

{ 4, 6}

{2,3,5,7}

(A∪B)∪C= --------------------------

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A∩B(B∪C)

A∪(B∪C)

A∪(B∩C)

None of these

The graph of a linear function is

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a circle

triangle

a straight line

none of these

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A

A'

U

None of these

The set of rational numbers is subset of

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The set of natural numbers

The set of real numbers

The set of integers

The set of whole numbers

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If the intersection of two sets is non-empty, but either is a subset of other are called

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Disjoint sets

Over lapping

Equal sets

None of these

Z is a group under

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Subtraction

Multiplication

Addition

None of these

Onto function is also called

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Binjective function

Injective function

Surjechive function

None of these

The sets {1, 2, 4} and {4, 6, 8, 10} are

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Equal sets

Equivalent sets

Disjoint sets

Over lapping sets

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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

A function in which the second elements of the order pairs are distinct is called

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Onto function

One-one function

Identity function

Inverse function

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A

A'

U

None of these

Which conjunction is not true ?

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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 disjunction of two statement p and q is true

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p is false

q is false

Both p and q are false

One of p and q is true

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

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