Question # 1

If A ⊆ B then A ∪ B is

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A

B

A'

A ∩B

The identity element of a set X with respect to intersection in P(x) is

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X

Does not exist

∅

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

If B⊆ A, then complement of B in A is = -----------------------

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A-B

A∩B

B-A

A∪B

Identity w.r.t intersection in a power set of any set is

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∅

Set itself

Singleton set

{0}

The multiplicative inverse of x such that x = 0 is

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-x

does not exist

1/x

0

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A is proper subset of B

A is an improper subset of B

A is equivalent to B

B is subset of A

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

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{a}

∅

{∅,{a}}

{∅,a}

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

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1

12

5

29

{x : xε Z and x < 1} is

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Singleton set

A set with two points

Empty set

None of these

The set {{a,b}} is

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Infinite set

Singleton set

Two points set

None

The logic in which every statement is regarded as true or false and no other possibility is called

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Aristotelian login

Inductive logic

Non-Aristotelian logic

None of these

The statement that a group can have more than one identity elements is

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True

False

Ambiguous

Some times true

The set (Q, .)

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Forms a group

Does not form a group

Contains no additive identity

Contains no additive inverse

The negation of given number is a

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Binary operation

Unary operation

Relation

None of these

A∪(A∪B)= --------------------

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B

A

A∪B

None of these

The set {{a,b}} is

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Infinite set

Singleton set

Two points set

None

A = B iff

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All elements of A also the elements of B

A and B should be singleton

A and B have the same number of elements

If both have the same element

If #n = (n-5)²+ 5, then find #3 x #4.

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54

12

4

9

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An empty set

Universal set

A singleton set

None of these

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ECAT Mathematics Chapter 23 MCQs With Answers

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