Question # 1

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Z + W

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-2/5

2/5

5/2

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a = Im

a = Re(z)

a = Natural number

None of these

a^m.aⁿ = a^m+nis ________ law of exponents.

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Sum of powers

Power of fraction

Power of power

Law of quotient

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Natural number

Whole number

integers

Rational numbers

A non-terminating, non-recurring decimal represents:

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A natural number

A rational number

An Irrational number

Prime number

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3

1/3

35

None of these

Real part of 2ab ( i + i²) is:

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2ab

-2ab

2abi

-2abi

Solution of x²= -1 in real numbers:

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-1

+1

Solution does not exist

∀ a,b∈ R, a + b = b + a is _____________ Property of real numbers.

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Closure property w.r.to '+'

Closure property w.r.to 'x'

Commutative property '+'

Commutative property w.r.to 'x'

Which of the following sets have the Closure Property w.r.t addition.

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{0}

{0, -1}

{0,1}

∀ a∈ R⇒ a = a is __________ property:

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Reflexive

Symmetric

Transitive

Additive property

The value of i^{9 is:}

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1

-1

i

-i

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x

x⁷

x ^1/7

x^7/2

Which of the following is associative property w.r.to addition:

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a + b = b + a

a (bc) = (ab) c

a + (b + c) = (a + b) + c

None of these

Which of the following is closure property w.r.to multiplications:

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a + b∈ R∀ a, b∈ R

a. b∈ R∀ a, b∈ R

a + b = b + a∀a,b∈ R

a.b = b.a∀a,b∈ R

The conjugate of 6 + 5i.

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-6 + 5i

-6 - 5i

6 + 5i

6 - 5i

Identify the property used in x > y Or x = y Or x < y:

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Symmetric

Reflexive

Irichotomy

Transitive

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Mathematics 9th Class English Medium Unit 2 Online Test MCQs With Answers

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