Question # 1

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Associative property of addition

Associative property of multiplication

Commutative property of addition

Commutative property of multiplication

Name the property used in 4.1 + (-4.1) = 0

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Additive inverse

Multiplication inverse

Additive identity

Multiplication identity

(a,b) +(-a,-b) =

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(0,0)

(a,b)

(-a,-b)

(1,1)

In R the number of identity element w.r.t '+' is

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One

Two

Three

Four

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Set of whole number

Rational Numbers

Complex numbers

Whole numbers

The set of rationals numbers between 0 and I is

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Finite

Null set

Infinite

None of these

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O is ______

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A positive integer

A negative integer

A natural number

An integer

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N

r

2r

π

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Principle of equality of fractions

Rule for product of fraction

Rule for quotient of fraction

Golden rule of fractions

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x

y

6 is

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A prime integer

An irrational number

A rational number

An odd integer

The product of complex numbers (a,b) and (c,d) is

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(ac, bd)

(ac-bd, ad+bc)

(ab,cd)

(ac+bd,ad-bc)

14 is not a

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Prime number

Whole number

Even number

Real number

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1

3

2-i

-1

3/2 is

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An irrational number

Whole number

A positive integer

A rational number

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If 0 = R, thenthe additive inverse of a is

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1/9

^1/-9

a

-a

√-1 b=

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b

2

2b

None of these

If z₁ = 1 + 2i, z₂ = 3 + 4i then

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z₁ > z₂

z₁ = z₂

z₁ < z₂

None of these

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The additive inverse of 0 is

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1

-1

0

Does not exist

If a set S contains n elements then P (S) has ........ number of elements

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2ⁿ

2ⁿ²

2.n

n²

If Z₁= 1 + i, Z₂= 2+3i, then |Z₂- Z₁| = ?

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If z = (x,y) , then z ̅ =

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(-x,y)

(x,-y)

(-x, -y)

None of these

√25 is a number

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Rational

Irrational

Natural

Odd

Associative law of multiplication

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ab = ba

a(bc) = (ab) c

a(b+c) = ab + ac

(a + b)c = ac + bc

QUQ, =

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N

R

W

Z

In (x + iy), y is called as

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Imaginary part

Complex number

Real part

None of above

∀x, y ∈ R, either x = y or x > y or x < y is

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Transitive property

Reflexive property

Trichotomy property

None of these

1/3 is ______

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A prime number

An integer

A rational number

An irrational number

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ECAT Mathematics Chapter 1 Number System Online Test MCQs With Answers

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