Question # 1

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

Conjugate of -3 is:

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3

-3

-3i

3i

∀ a∈ R⇒ a + o = a = o + a, then O is called:

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Multiplicative identity

Additive identity

Additive inverse

Multiplicative inverse

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

The value i¹⁰

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1

-1

i

-i

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a = Im

a = Re(z)

a = Natural number

None of these

Symbol "For all" is used:

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A

Ɐ

gama

D

If Z = Z₂ and Z₂ = Z₃ then Z₁ = Z₃ this property is known as ______ property:

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Reflexive

Symmetric

Transitive

Commutative

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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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-2/5

2/5

5/2

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

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1

b

O

10

Conjugate of real number is:

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Pure imaginary

Real

Complex

None

Real part in -3i is:

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3

O

-3

1

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

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