Question # 1

If z1 = 2 + 6i and z2 = 3 + 7i then which expression defines the product of z1 and z2

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36 +(-32)i

-36+32i

6+(-11)i

0, +(-12)i

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

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8

4

12

16

The negation of a number

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a relation

a function

unary operation

binary operation

G = {e, a, b, c} is an Abelian group with e as identity element. The order of the other elements are

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2, 2, 2

3, 3, 3

2, 2, 4

2, 3, 4

The set of real numbers is a subset of

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The set of natural numbers

The set of rational numbers

The set of integers

The set of complex numbers

The set of months in a year beginning with S.

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{September, October, November}

Singleton set

Null set

Empty set

The graph of a quadratic function is

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Circle

Ellipse

Parabola

Hexagon

If p and q are two statements then their conjunction is denoted by

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a-b=ab

ab=a

a+b=ab

Multiplicative inverse of 0 is

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0

1

+-1

Does not exist

A = B iff

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All elements of A also the elements of B

A and B should be singleton

A and B have the same number of elements

If both have the same element

Given X.Y are any two sets such that number of elements in X = 18, number of elements in set Y = 24,and number of elements in set X∪ Y =40,then number of elements in set x∩ Y =

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3

1

2

4

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The set { {a, b} } is

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Infinite set

Singleton set

Two points set

Empty set

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

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{a}

∅

{∅,{a}}

{∅,a}

The set of the first elements of the ordered pairs forming a relation is called its

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Function on B

Range

Domain

A into B

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

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One-one function

Constant function

Onto function

Quadratic function

(A ∩ B)c =

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A∩ B

(A ∪ B)c

Ac∪Bc

Φ

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A

A'

U

None of these

The set which has no proper subset is

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{0}

{}

{∅}

None of these

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ECAT Mathematics Chapter 23 MCQs With Answers

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