Question # 1

QUQ'

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If z₁ = (a,b), z₂=(c,d), then z₁ z₂ = -------------------

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(ac,bd)

(ac+bd, ad-bc)

(ac-bd , ad+bc)

(ac-bd , ad-bc)

6 is

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A prime integar

An irrational number

A rational number

An odd integer

If z = (x,y) , then z ̅ =

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(-x,y)

(x,-y)

(-x, -y)

None of these

Associative law of multiplication

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ab = ba

a(bc) = (ab) c

a(b+c) = ab + ac

(a + b)c = ac + bc

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Closure law of addition

Associative law of addition

Additive inverse

Additive identity

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√23 is

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A rational number

A irrational number

An even integer

A factor of 36

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Commutative property of addition

Closure property of addition

Additive inverse

Associative property w.r.t. to addition

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∀x,y∈R and x> 0 , y>0, if x > y

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None of these

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The additive inverse of 2/3 is

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3/2

-2/3

-3/2

0

Q∪ Q' =

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Q

Q'

N

R

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x

y

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2/9,5/7∈ R,(2│9)(5│7)=10/63∈R this property is called

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Associative property

Identity property

Commutative property

Closure property w.r.t multiplication

A non-terminating, non-recurring decimal represent

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A natural number

A rational number

An irrational number

A prime number

(a,b) +(-a,-b) =

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(0,0)

(a,b)

(-a,-b)

(1,1)

In R, the additive inverse of a is

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0

1

-a

1/a

The square root of every incomplete square is an

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Rational numbers

Even numbers

odd numbers

Irrational numbers

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

Name the property used in 100 + 0 = 100

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Additive inverse

Multiplicative inverse

Additive identity

Multiplicative identity

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additive property

multiplicative property

additive identity

multiplicative identity

Every recurring decimal represents

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A natural number

A rational number

An irrational number

A whole number

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additive property

multiplicative property

additive inverse

additive identity

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A rational number

A natural number

An irrational number

An integer

The order axioms are satisfied by set of

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C

C and R

R

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

The multiplicative inverse of 1 - 2i is

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Associative property of addition

Associative property of multiplication

Commutative property of addition

Commutative property of multiplication

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