Question # 1

If Z₁= 1 + i, Z₂= 2+3i, then |Z₂- Z₁| = ?

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In R the left cancellation property w.r.t addition is

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∀a,b ε R, ab = be is a

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Commutative law of multiplication

Closure law of multiplication

Associative law of multiplication

Multiplicative identity

4/√49 is a

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Irrational Number

Prime Number

Rational number

Whole number

π is ______

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A complex number

A rational number

A natural number

An irrational number

The polar form of complex number x ≠ I y =

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r cos θ+ r sin θ

r cos θ+ is sin θ

cos θ+ r sin θ

i cos θ+ i sin θ

If in a set of real no a is multiplicative identity then

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a,a = a²

a,a = 1

a,a = 0

None of these

∀a,b,c∈R and c>0,then

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a>b ⇒ ac < bc

a>b ⇒ ac > bc

a<b ⇒ ac > bc

None of these

If 0 = R, thenthe additive inverse of a is

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1/9

^1/-9

a

-a

(a +bi) -c (c +di) =

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(a +b) = (c +d)

(a +c) + i(b +d)

(a -c) + (c -d)i

(a -c) +(b -d) i

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Commutative law of addition

Associative law of addition

Additive identity

Additive inverse

The square root of every incomplete square is an

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Rational numbers

Even numbers

odd numbers

Irrational numbers

The equation |x +4| = x has solution

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x = -2

x = 2

x = -4

x = 4

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15

15 i

-15 i

-15

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0

1

-1

2

i³=

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-1

i

-i

1

The value of i⁴ⁿ⁺¹

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1

-1

i

i²

The value of x, and y, when (x + iy)²= 5 + 4i

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X = 2, y = 1

X = -2, y = 1

X = 2, y = -1

X = 2, y = 2

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additive property

multiplicative property

additive identity

multiplicative identity

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None of these

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Reflexive property

Symmetric property

Cancellations property w.r.t. addition

Transitive property

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Closure law of addition

Associative law of addition

Commutative law of multiplication

Associative law of multiplication

Additive inverse of - a - b is

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a

-a + b

a - b

a + b

Geometrically, the modulus of a complex number represents its distance from the

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Point (1, 0)

Point (0, 1)

Point (1, 1)

Point (0, 0)

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are real no

both are not real

are imaginary no

both are imaginary

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Associative law of addition

Commutative law of addition

Additive identity

Closure law of addition

The conjugate of √5 i is

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√5

-√5 i

i

5i

i¹⁰¹=

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i

i²

-i

-1

The square root of 2i - 20i is

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+-(5 - 2i)

+-(5 + 2i)

(5 - 2i)

None of these

If P is a whole number greater than 1, which has only P and I are factors. Then P is called

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Wholw number

Prime number

Even number

Odd number

√25 is a number

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Rational

Irrational

Natural

Odd

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