Question # 1

i^-(4n+2)= -------------------------------

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1

i

-1

-i

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A rational number

An irrational number

An odd number

A prime number

Every real number is

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a positive integer

a rational number

a negative integer

a complex number

√2 +√3 +√5) = (√2 +√3 +√5: this property is called

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associative property w.r.t addition

commutative property

Closure property w.r.t addition

Additive identity

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A positive integer

A negative integer

A natural number

An irrational number

A subset of set of complex number whose elements are of the form (a,0) is called

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Real number

Complex number

Rational number

Irrational number

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1

3

2-i

-1

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(a + b)c = a . c + bc

a + b = b + a

(a + b) + c = a + (b + c)

a(b+ c) = ab + ac

In (x +iy) y is called as

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Imaginary part

Complex number

Real part

None of above

The multiplicative inverse ofx^(-1) is

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x

a-2

0

1

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

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(0,0)

(a, b)

(-a, -b)

(1, 1)

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The multiplicative inverse of (a,b) is

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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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Closure law of addition

Associative law of addition

Additive inverse

Additive identity

a.a^-1= a^-1.a = 1 is a

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Commutative law of multiplication

Multiplication identity

Associative law of multiplication

Multiplication inverse

The real number system contains.

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Positive Numbers

Negative numbers

Zero

(option a, b and c)

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)

The product of complex numbers (a,b) and (c,d) is

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(ac, bd)

(ac-bd, ad+bc)

(ab,cd)

(ac+bd,ad-bc)

i³ =

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-1

i

-i

1

Multiplicative inverse of "1" is

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0

±1

1

{0,1}

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15

15 i

-15 i

-15

Rational number is a number which can be written as a terminating decimal fraction or a

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Non-terminating decimal fraction

Non-recurring

Recurring decimal fraction

a, b and c

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additive property

multiplicative property

additive identity

multiplicative identity

√25 is a number

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Rational

Irrational

Natural

Odd

I is not

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Real number

Natural number

Prime Number

Whole Number

What is the conjugate of -6 -i

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-6 +i

6 + i

-6 -i

6 -i

i is equal

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(1 , 0)

(0 , 1)

(1 , 1)

(0 , 0)

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

In R, the additive identity is

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0

1

-1

None

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