Question # 1

∀ 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'

The value i¹⁰

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1

-1

i

-i

Real part of 2ab ( i + i²) is:

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2ab

-2ab

2abi

-2abi

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Z + W

Every real number is also a complex number with imaginary part as ______

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1

b

O

10

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

Set of Real numbers =

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Q

Q'

QႶQ'

QUQ'

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x

x⁷

x ^1/7

x^7/2

The conjugate of 5 + 4i is

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-5 + 4i

-5 - 4i

5 - 4i

5 + 4i

Conjugate of 4i - 3 is:

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4i + 3

-4i - 3

-4i + 3

Set of Rational numbers in set builder notation:

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None of these

The value of i^{9 is:}

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1

-1

i

-i

If a, b∈R then only one oaf a = b or a<b or a>b holds is called:

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Trichotomy Property

Transitive Property

Additive Property

Multiplicative Property

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Additive identity

Additive inverse

Multiplicative identiry

Multiplicative inverse

The value of (-i)⁸:

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-i

i

1

-1

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a = Im

a = Re(z)

a = Natural number

None of these

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

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