Question # 1

Which conjunction is not true ?

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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

The many subset can be formed from the set {a,b,c,d}

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8

4

12

16

The set of complex numbers forms a group under the binary operation of

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Addition

none of these

Division

Subtraction

A conditional is regarded as false only when the antecedent is true and consequent is

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True

False

Known

Unknown

A - B = ______

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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

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A = C

A = B

B = C

None of these

If A⊆ B, and B is a finite set, then

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n (a) < n(B)

n(B)<(A)

n(A)≤ n (B)

n(A)≥ n(B)

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A

B

U

None of these

{x : xε Z and x < 1} is

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Singleton set

A set with two points

Empty set

None of these

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Addition

Multiplication

Division

Both addition and multiplication

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A = B

B = C

A = C

None of these

{1, 2, 3} is _____

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an infinite set

A finite set

A singleton set

Universal set

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A

B

U

None of these

The set {1,-1, i, -i} form a group under

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Addition

Multiplication

Subtraction

None

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 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

Multiplicative inverse of 0 is

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0

1

+-1

Does not exist

Every subset of a finite set is

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Disjoint

Null

Finite

Infinite

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ECAT Mathematics Chapter 23 MCQs With Answers

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