Question # 1

Given X,Y are any two sets such that number of elements in set X = 28, number of elements in set Y = 28, and number of elements in set X∪Y = 54, then number of elements in set X ∩ Y =

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4

3

2

1

P∉ A means

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Pis subset of A

Pis an element of A

P does not belongs to A

A does not element of P

A function whose range is just one elements is called

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One-one function

Constant function

Onto function

Identity function

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4

3

2

1

If a = {2m/2m < 9 ,m€ p} , the (n A) =

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{2,3,4,5,6,7,8}

{2,4,6,8............16}

{ 4, 6}

{2,3,5,7}

The set { {a, b} } is

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Infinite set

Singleton set

Two points set

Empty set

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a constant function

linear function

quadratic funtion

none of these

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Biconditional

Implication

Antecedent

Hypothesis

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

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A set having only one element is called

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An empty set

Universal set

A singleton set

A power set

The set {1, -1, i, -i}

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Form a group w.r.t addition

Form a group w.r.t multiplication

Does not form a group w.r.t multiplication

Not closed under multiplication

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

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8

4

12

16

The set (Z, +) forms a group

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Forms a group w.r.t. addition

Non commutative group w.r.t. multiplication

Forms a group w.r.t multiplication

Doesn't form a group

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

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{a}

∅

{∅,{a}}

{∅,a}

Onto function is also called

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Binjective function

Injective function

Surjechive function

None of these

Z is a

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Infinite set

Finite set

Singleton set

Set of all integers

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none of these

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In a school, there are 150 students. Out of these 80 students enrolled for mathematics class, 50 enrolled for English class, and 60 enrolled for Physics class. The students enrolled for English cannot any other class, but the students of mathematics and Physics can take two courses at a time. Find the number of students who have taken both physics and mathematics

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40

30

50

20

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-x

Infinite set

{-4, 4}

None of these

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ECAT Mathematics Chapter 23 MCQs With Answers

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