Question # 1

The negation of a number

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a relation

a function

unary operation

binary operation

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Natural numbers

Whole numbers

Integers

Rational numbers

The number of different ways of describing a set is

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One

Two

Three

Four

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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(A ∩ B)c =

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A∩ B

(A ∪ B)c

Ac∪Bc

Φ

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A

A'

U

U'

0 is a symbol of

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singleton set

Empty set

Equivalent set

Infinite 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 p and q are two statements then their conjunction is denoted by

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A

B

A'

None of these

The number of subsets of a set having three elements is

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4

6

8

none of these

A = B if

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A is equivalent to B

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

Z is a group under

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Subtraction

Multiplication

Addition

None of these

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a constant function

linear function

quadratic funtion

none of these

Which of the following is the subset of all sets?

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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}

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-x

Infinite set

{-4, 4}

None of these

For any set X, X∪X is

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X

X'

Φ

Universal Set

If B-A≠φ , then n(B-A) is equal to

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n(a)+n(c)

n(c)-n(a)

n(a)-n(c)

None of these

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Addition

Multiplication

Division

Both addition and multiplication

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

If A = {x/x is a positive integer and 4≤x<23}, then A=

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{1,2,3,4,5,6,7}

{4,5,6...........22}

{1,2,3,.........23}

{1,2,3,4,5}

The set {{a,b}} is

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Infinite set

Singleton set

Two points set

None

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The extraction of cube root of a given number is a

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Unary Operation

Binary Operation

Relation

None of these

The number of proper subset of A ={a.b.c.d} is

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3

6

8

15

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A onto B

both a & c

A into B

none of these

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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

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

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