Question # 1

The identity element with respect to addition is:

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0

1

-1

0 and 1

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integer

rationalnumber

irrationalnumber

naturalnumber

The imaginary part of the complex number a + bi is:

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a

b

bi

none of these

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

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3 - 5i

3i - 5

7 - 9i

3 + 5i

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Reflexive property

Symmetricproperty

Transitiveproperty

Trichotomyproperty

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x = 0

y = 0

x = 0 and y = 0

x = 0 or y = 0

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cancellation property w.r.t multiplication

cancellationproperty w.r.t addition

multiplicativeproperty

additiveproperty

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a + c = b + d

a + b = c + d

a - b = c - d

None of these

Irrational numbers are:

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terminating decimals

non-terminating decimals

non-terminating, repeating decimals

non-terminating, non repeating

Every real number is also a/an:

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integer

rational number

irrationalnumber

complexnumber

Rational numbers are:

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repeating decimals

terminatingdecimals

periodicdecimals

all of these

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real numbers

complexnumbers

primenumbers

oddnumbers

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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Zero is:

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a natural number

a whole number

a positive integer

a negativeinteger

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x = 0, y = 0

i² + 1 =

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-1

0

i

1

The multiplicative identity of real numbers is:

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0

1

2

-1

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0

i

-i

1

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