Question # 1

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

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The set { {a, b} } is

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Infinite set

Singleton set

Two points set

Empty set

The multiplicative inverse of x such that x = 0 is

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-x

Does not exist

1/x

±1

If #n = (n-5)²+ 5, then find #3 x #4.

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54

12

4

9

(A ∩ B)c =

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A∩ B

(A ∪ B)c

Ac∪Bc

Φ

If A and B are two sets then any subset R of B x A is called

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relation on A

relation on B

relation from A to B

relation from B to A

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 A = (x/x€ Q˄ 0 < x < 1}, the A is

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Infinite set

Finite set

Set of rational numbers

Set of real numbers

The complement of set A relative to universal set U is the set

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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

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}

Empty set is

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Not the member of real numbers

Infinite set

Finite set

Not subset of every set

The set of natural is a semi group w.r.t

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Addition

Division

Subtraction

None of these

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 function whose range consists of just one element is called

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One-One Function

Identity Function

Onto Function

Constant Function

If A and B are two sets then intersection of A and B is denoted by

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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

A function whose range is just one element is called

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One-one function

Constant function

Onto function

Identity function

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a constant function

linear function

quadratic funtion

none of these

The number of different ways of describing a set is

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One

Two

Three

Four

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An empty set

Universal set

A singleton set

None of these

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

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A statement which is either true or false is called

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Induction

Deduction

Propositicon

Logic

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

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1

-1

±1

0

Does not exist

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none of these

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1

12

5

29

If p and q are two statements then their biconditional 'p if q' is denoted by

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-x

Infinite set

{-4, 4}

None of these

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

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