Question # 1

Every real number is:

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a Positive integer

a rational number

a negative integer

a complex number

A non-terminating, non-recurring decimal represents:

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A natural number

A rational number

An Irrational number

Prime number

If Z₁ = a + bi and Z₂ = c + di then Z₁.Z₂ =

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ac + bdi

ac - bd

ac - bd + adi + bci

multiplication is not possible

Imaginary part of -i (3i+2) is:

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-2

2

3

-3

The value i¹⁰

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1

-1

i

-i

In Z = a + bi, a is called ______ part of Z.

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Real

Imaginary

Whole

None

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Z + W

There exists a unique real number 1, is called ________ in multiplication:

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Multiplicative inverse

Additive inverse

Multiplicative identity

Additive identity

The value of i^{9 is:}

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1

-1

i

-i

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

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Multiplicative identity

Additive identity

Additive inverse

Multiplicative inverse

Set of Real numbers =

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Q

Q'

QႶQ'

QUQ'

The real numbers are represented geometrically by points on _________,

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Plane

Line

Space

None

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

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Symmetric

Reflexive

Irichotomy

Transitive

Conjugate of -3 is:

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3

-3

-3i

3i

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 conjugate of 6 + 5i.

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-6 + 5i

-6 - 5i

6 + 5i

6 - 5i

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