Question # 1

Name the property used in 1000 x 1 = 1000

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additive inverse

multiplicative inverse

additive identity

multiplicative identity

The square roots of negative numbers is called

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Real no

Complex no

Positive no

Negative no

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0

1

-1

None of these

4/√49 is a

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Irrational Number

Prime Number

Rational number

Whole number

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

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Associate law of addition

Commutative law of addition

Additive identity

Closure law of addition

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For any real numbers x,y,xy=o ⇒

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x ≠ 0 ∧ y ≠ 0

x = 0 ∨ y = 0

x = 0

y = 0

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

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

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One

Two

Three

Four

O is ______

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A positive integer

A negative integer

A natural number

An integer

i¹⁰¹=

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i

i²

-i

-1

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(a-1)-1 =

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a-1

a

-a

None of above

i⁹ =

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i²

-1

1

i

i is equal

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(1 , 0)

(0 , 1)

(1 , 1)

(0 , 0)

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N

r

2r

π

A prime number can be a factor of a square only if it occurs in the square at least

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Once

Thirce

Twice

None of these

Every real number is

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A complex number

A rational number

A natural number

A prime number

i² =

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1

2

-1

0

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

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a+a = 2a

a+a = 1

a+a = 0

None of these

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

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√3 i

√7

-2-i

√5

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

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)

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The set {1, 2, 3, 4, ....} is called

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Set of Natural numbers

Set of whole numbers

Set of rational number

Set of irrational numbers

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