Question # 1

A conditional "if p then q" is denoted by

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If a 1-1 correspondence can be established b/w two sets A and B, then they are called

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Equal sets

Equivalent sets

Over lapping sets

None of these

The set {x|x∈N∧x-4=0} in tabular form is

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{-4}

{0}

{}

None of these

If A ⊆ B then A ∪ B is

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A

B

A'

A ∩B

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A

B

U

None of these

The set {-1,1} is

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Group under the multiplication

Group under addition

Does not form a group

Contains no identity element

{x : xε Z and x < 1} is

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Singleton set

A set with two points

Empty set

None of these

For any set B, BUB' is

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Is set B

Set B'

Universal set

None of these

Φ set is the _______ of all sets

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Subset

Union

Universal

Intersection

Which of the following is the subset of all sets

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Φ

{1,2,3}

{Φ}

{0}

{x|x∈R∧x≠x} is a

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Infinite set

Null set

Finite set

None of these

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An empty set

Universal set

A singleton set

None of these

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none of these

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

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1

-1

0

Does not exist

If A = {2m/m³= 8 , m€ Z} then A =

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{1,8,27}

{4}

(2,4,6}

{2,16,54}

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

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Addition

Multiplication

Subtraction

Division

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For any set X, X∪X is

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X

X'

Φ

Universal Set

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

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One-one function

Constant function

Onto function

Quadratic function

In set builder notation the set {0, 1, 2, ............, 100} can be written as

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ECAT Mathematics Chapter 23 MCQs With Answers

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