Question # 1

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are real no

both are not real

are imaginary no

both are imaginary

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Associative property of addition

Associative property of multiplication

Commutative property of addition

Commutative property of multiplication

Q∪ Q' =

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Q

Q'

N

R

The multiplicative inverse of 2/3 is

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3/2

-2/3

-3/2

1

The multiplicative inverse ofx^(-1) is

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x

a-2

0

1

In R, the additive inverse of a is

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0

1

-a

1/a

If z₁ = 1 + 2i, z₂ = 3 + 4i then

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z₁ > z₂

z₁ = z₂

z₁ < z₂

None of these

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

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(a^-1)^-1=

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a^-1

a

-a

None of above

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z is purely imaginary

a is any complex number

z is real

None of these

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Rational

Irrational

Natural

Odd

0.25 is ______

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An irrational number

A natural number

A prime number

A rational number

In R the number of identity element w.r.t '+' is

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One

Two

Three

Four

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Some of two real numbers is also a real number , this property is called:

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Commutative property w.r.t addition

Closure property w.r.t. addition

Associative property w.r.t. addition

Distributive property w.r.t addition

In R the number of identity elements w.r.t.'.' is

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One

Two

Three

Four

∀x,y,z ∈ R and z 0,then

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x > y ⇒ xz > yz

x<y ⇒ xz < yz

x < y ⇒ xz > yz

None of these

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

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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)

Which of the following sets has closure property w.r.t. addition

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{ 0 }

{ 1 }

{ 0, -1}

{ 1, -1}

4/√49 is a

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Irrational Number

Prime Number

Rational number

Whole number

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Associative property of addition

Commutative property of addition

Distributive property

Additive identity

The solution set of the equation |3x + 2| = 5 is

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1/3 is ______

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A prime number

An integer

A rational number

An irrational number

∀ z ∈ C, multipliucative is

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(1,1)

(1,0)

(0,1)

None of these

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