Question # 1

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

The set R is ______ w.r.t subtraction

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Not a group

A group

No conclusion drawn

Non commutative group

In a country, 55% of the male population has houses in cities while 30% have houses both in cities and in village. Find the percentage of the population that has house only in villages.

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45

30

25

50

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 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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A onto B

both a & c

A into B

none of these

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 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

The set {Z\{0}} is group w.r.t

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Addition

Multiplication

Division

Subtraction

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 0 = {1,3,5.......}, then n (0) =

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99

odd integers

Even numbers

Infinite

Which of the following is the subset of all sets

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Φ

{1,2,3}

{Φ}

{0}

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

The set which has no proper subset is

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{0}

{}

{∅}

None of these

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A finite set

An infinite set

An empty set

None of these

A - B = ______

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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

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

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If n(X) = 18, n(X∩Y) = 7, n(X∪ Y) = 40 then n(Y) =

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1

12

5

29

Additive inverse of -a -b is

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a

-a + b

a - b

a + b

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

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One-one function

Constant function

Onto function

Quadratic function

Z is a

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Infinite set

Finite set

Singleton set

Set of all integers

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

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Addition

Multiplication

Subtraction

Division

If D = {a} , the P(D) =

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{a}

∅

{∅,{a}}

{∅,a}

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A = C

A = B

B = C

None of these

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Addition

Subtraction

Multiplication

None of these

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A

B

U

None of these

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P∉ A means

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Pis subset of A

Pis an element of A

P does not belongs to A

A does not element of P

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

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2ⁿ

2²ⁿ

2 . n

n²

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A

A'

U

None of these

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ECAT Mathematics Chapter 2 Set Function and Groups Online Test MCQs With Answers

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