Question # 1

Every real number is also a/an:

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integer

rational number

irrationalnumber

complexnumber

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rationalnumber

irrationalnumber

naturalnumber

wholenumber

Rational numbers are:

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repeating decimals

terminatingdecimals

periodicdecimals

all of these

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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

Conjugate of complex number (-a, -b) is:

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(-a, b)

(-a, -b)

(a, -b)

none of these

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

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0

-a

a

Conjugate of -3 -2 i is:

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3 + 2i

-3 + 2i

2 + 3i

-2 + 3i

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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cancellation property w.r.t multiplication

cancellationproperty w.r.t addition

multiplicativeproperty

additiveproperty

i² + 1 =

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-1

0

i

1

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