Question # 1

3/4 is ______

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An odd number

An even number

A natural number

A rational number

The multiplicative inverse of 1 is

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1

-1

0

Does not exist

∀x,y∈ R and x < 0, y < 0, which one is true

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xy < o

xy = o

xy > o

None of these

The set {0,-1} hold closure property under

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Addition

Both a & c

Multiplication

None of these

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Reflexive property

Symmetric property

Transitive property

Additive property

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-8

8

8i

32

In R, the additive inverse of a is

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0

1

-a

1/a

The multiplicative inverse of (a,b) is

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

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√3 i

√7

-2-i

√5

The multiplicative inverse of 2/3 is

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3/2

-2/3

-3/2

1

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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

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A non-terminating non_recurring decimal represents an

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Irrational no

Both a & c

Rational no

None of these

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i³=

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-1

i

-i

1

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Closure law of addition

Associative law of addition

Commutative law of multiplication

Associative law of multiplication

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15

15 i

-15 i

-15

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Commutative law of multiplication

Closure law of multiplication

Associative law of multiplication

Multiplication identity

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

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

The square root of 2i - 20i is

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+-(5 - 2i)

+-(5 + 2i)

(5 - 2i)

None of these

0 (zero) is

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An irrational number

A rational number

A negative integer

A positive number

A non-terminating, non-recurring decimal represent

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A natural number

A rational number

An irrational number

A prime number

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N

r

2r

π

O is ______

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A positive integer

A negative integer

A natural number

An integer

The property used in -3 <-2 ⇒0 <1

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Commutative property

Additive property of inequality

Additive inverse

Additive identity

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