Question # 1

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A

B

U

None of these

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

Write down the power set of {9, 11}

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Which of the following statement is true?

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A set is a collection of non-empty object

A set is a collection of only numbers

a set is any collection of things

a set is well-defined collection of objects

The set X is

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Proper Subset of X

Not A subset of X

Improper Subset of X

None of these

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A

B

U

None of these

Which conjunction is not true ?

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

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99

odd integers

Even numbers

Infinite

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Empty set is

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Not the member of real numbers

Infinite set

Finite set

Not subset of every set

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 -1 in the set {1-, 1} is

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1

-1

+-1

0

A statement which is either true or false is called

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Induction

Deduction

Propositicon

Logic

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A

A'

U

U'

Power set of X i.e P(X)..........under the binary operation of union U

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Forms a group

Does not form a group

Has no identity element

Infinite set although X is infinite

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A

A'

U

None of these

The set of natural is a semi group w.r.t

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Addition

Division

Subtraction

None of these

The multiplicative inverse of -1 in the set {1-,1} is

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1

-1

±1

0

Does not exist

The contra positive of p → q is

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q → p

~q→~q

~p→~q

None of these

For any set X, X∪X is

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X

X'

Φ

Universal Set

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A

B

A'

None of these

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A finite set

An infinite set

An empty set

None of these

Every subset of a finite set is

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Disjoint

Null

Finite

Infinite

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

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8

4

12

16

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The function whose range consists of just one element is called

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One-One Function

Identity Function

Onto Function

Constant Function

What is the number of elements of the power set of {0, 1}

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1

2

3

4

A function whose range is just one element is called

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One-one function

Constant function

Onto function

Identity function

if A = (x/x€ Q˄ 0 < x < 1}, the A is

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Infinite set

Finite set

Set of rational numbers

Set of real numbers

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

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A-B

A∩B

B-A

A∪B

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

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