Question # 1

Every real number is

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A complex number

A rational number

A natural number

A prime number

(a-1)-1 =

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a-1

a

-a

None of above

In (x + iy), y is called as

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Imaginary part

Complex number

Real part

None of above

If Z = (1,2), then Z^-1= ?

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(0.2, 0.4)

(-0.2, 0.4)

(0.2, -0.4)

(-0.2, -0.4)

If ∀a,b ε R,then a +b ε R is a property

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Closure law of addition

Associative law of addition

Additive inverse

Additive identity

6 is

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A prime integer

An irrational number

A rational number

An odd integer

(a,0) x (c,0) =

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(0,ac)

(ac,0)

(0,0)

(a,c)

π is ______

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A complex number

A rational number

A natural number

An irrational number

Any whole number can be written as a product of factors which are

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Even number

Odd numbers

Prime number

Rational number

Every irrational number is

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A real number

A prime number

A natural number

An integer

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The identity element with respect to subtraction is

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0

-1

0 and 1

None of thes

√-1 b=

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b

2

2b

None of these

If z = (x,y) , then z ̅ =

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(-x,y)

(x,-y)

(-x, -y)

None of these

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∀ z ∈ C, multipliucative is

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(1,1)

(1,0)

(0,1)

None of these

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1

-1

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Reflexive property

Symmetric property

Transitive property

Additive property

The identity element with respect to subtraction is

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0

1

-1

Does not exist

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15

15 i

-15 i

-15

Associative law of multiplication

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ab - ba

a(bc) = (ab) c

a(b + c) = ab +ac

(a +b)c = ac + bc

(7, 9) + (3, -5) =

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(4, 4)

(10, 4)

(9, -5)

(7, 3)

There is no element common in

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N and W

E and W

N and O

Q and Q'

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Every recurring decimal represents

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A natural number

A rational number

An irrational number

A whole number

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

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One

Two

Three

Four

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A positive integer

A negative integer

A natural number

An irrational number

Name the property used in 4 + 9 = 9 + 4

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Associative property of addition

Commutative property of addition

Distributive property

Additive identity

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

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i³ =

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-1

i

-i

1

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