Question # 1

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closureproperty

associativeproperty

commutativeproperty

trichotomyproperty

The multiplicative identity of real numbers is:

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0

1

2

-1

The additive inverse of a real number is a:

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0

-a

a

Rational numbers are:

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repeating decimals

terminatingdecimals

periodicdecimals

all of these

The set of negative integers is closed with respect to:

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addition

multiplication

both (a) and (b)

subtraction

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Additive property

Multiplicativeproperty

Reflexiveproperty

Transitive property

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additive property

multiplicative inverseproperty

transitive property

negative property

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integer

rational number

irrational number

natural number

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rationalnumber

irrationalnumber

naturalnumber

wholenumber

Every real number is also a/an:

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integer

rational number

irrationalnumber

complexnumber

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x = 0, y = 0

The multiplicative invers of a non-zero real number a is:

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0

-a

a

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If z₁ = 4i and z₂ = 3 - 9i, then z₁ + z₂ =

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3 - 5i

3i - 5

7 - 9i

3 + 5i

π, e are:

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integers

natural numbers

rationalnumbers

irrationalnumbers

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rational number

irrational number

natural number

whole number

π is defined as:

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ration of diameter of a circle to its circumference

ration of the circumference of a circle to its diameter

ration of area of a circle to its circumference

ration of the circumference of a circle to its area

Irrational numbers are:

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terminating decimals

non-terminating decimals

non-terminating, repeating decimals

non-terminating, non repeating

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z is purely real

z is any complex number

z is purely imaginary

real part of z = imaginary part of z

Modulus of 15 i + 20 is:

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20

15

25

none of the above

If z = x + i y = r (cos Θ + i sin Θ), then arg z is:

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tan Θ

cos²Θ + sin²Θ

r

Θ

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