Question # 1

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i

0

The multiplicative identity of real numbers is:

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0

1

2

-1

The ordered pairs (2, 5) and (5, 2) are:

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not equal

equal

disjoint

empty

Which of the following is correct:

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2 + 7i > 10 + i

1 + i > 1 - i

4 + 3i > 1 + 3i

none of these

The set of all rational numbers between 2, 3 is:

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an empty set

an infinite set

a finite set

a power set

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x = 0, y = 0

Every real number is also a/an:

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integer

rational number

irrationalnumber

complexnumber

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closure property w.r.t multiplication

commutativeproperty w.r.t multiplication

associativeproperty w.r.t multiplication

trichotomy property

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rational number

irrational number

natural number

whole number

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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Reflexive property

Symmetricproperty

Transitiveproperty

Trichotomyproperty

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

Factors of x² + y² are:

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(x + iy) (x - iy)

(x + y) (x - y)

(x + y) (x + y)

none

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

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a

b

bi

none of these

Conjugate of a + i b is:

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-a + ib

a + ib

-a - ib

a - ib

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a + c = b + d

a + b = c + d

a - b = c - d

None of these

Zero is:

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a natural number

a whole number

a positive integer

a negativeinteger

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rationalnumber

irrationalnumber

naturalnumber

wholenumber

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archimedean property

transitive property

multiplicative property

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