Question # 1

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A

B

U

None of these

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A statement which is either true or false is called

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Induction

Deduction

Propositicon

Logic

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None of these

(A∩Bc)c= -------------------------

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Ac∪Bc

Ac∪B

Ac∩B

None of these

The number of subset of {0} is

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1

2

3

None

The identity elements with respect to subtraction is

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0

1

-1

Does not exist

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 and B be two sets. If every element of A is also an element of B then

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Natural numbers

Whole numbers

Integers

Rational numbers

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

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Addition

Multiplication

Division

Subtraction

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The multiplicative inverse of x such that x = 0 is

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-x

does not exist

1/x

0

Which symbolic notation represent unary operation ?

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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

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Conclusion

Implication

Antecedent

Hypothesis

For any two sets A and, A ⊆ B if

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x ∈ A ⇒ x ∈ B

x ∉ A ⇒ x ∉ B

x ∈ A ⇒ x ∉ B

None of these

A - B = ______

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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

The set Q

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Forms a group under addition

Does not form a group

Contains no additive indentity

Contains no additive inverse

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A

A'

U

None of these

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Group of none-singular matrices under multiplication is

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None-Abelian group

Semi group

Abelian group

None of these

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A

A'

U

U'

Which conjunction is not true ?

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If A∩B=B, then n(A∩B) is equal to

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n(a)

n(a)+n(c)

n(c)

None of these

If we have a statement "if p then q" then q is called

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Conclusion

Implication

Unknown

Hypothesis

The set { {a,b} } is

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Infinite set

Singleton set

Two points set

Empty set

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4

3

2

1

For any set B, BUB' is

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Is set B

Set B'

Universal set

None of these

Z is the set of integers, (z, *) is a group with a * b = a + b + 1, a, b∈G. then inverse of a is

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-a

a + 1

-2 -a

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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