Question # 1

The√ is used for the

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Positive square root

Negative square root

+ve and -ve square root

Whole 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

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If A = {x / x ∈ R ∧ x² - 16 = 0} then A =

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- x

Infinite set

Φ

{-4,4}

Which of the following sets has closure property w.r.t. addition

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{ 0 }

{ 1 }

{ 0, -1}

{ 1, -1}

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)

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Additive property of inequality

Commutative property

Additive inverse

Additive identity

If z = (x,y) , then z ̅ =

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(-x,y)

(x,-y)

(-x, -y)

None of these

Total number of subsets that can be formed out of the set {a,b,c} is

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1

4

8

12

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15

15 i

-15 i

-15

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Closure law of addition

Associative law of addition

Commutative law of multiplication

Associative law of multiplication

If 0 = R, thenthe additive inverse of a is

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1/9

^1/-9

a

-a

The multiplicative inverse of -3i is

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3i

-3i

-1/3i

1/3 i

In (x + iy) x is the known as

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Imaginary part of complex number

Real part of complex number

Complex number

None of above

i¹⁰¹ =

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i

i²

-i

-1

∀a,b ε R, ab = be is a

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Commutative law of multiplication

Closure law of multiplication

Associative law of multiplication

Multiplicative identity

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Symmetric property

Cancellation property w.r.t. multiplication

Reflexive property

Transitive property

202.04 is an example of

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Recurring decimals

Non-recurring decimals

Terminating decimals

None of these

(a^-1)^-1=

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a^-1

a

-a

None of above

The square root of 2i - 20i is

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±(5 - 2i)

±(5+ 2i)

(5 - 2i)

None of these

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i¹⁰¹=

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i

i²

-i

-1

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

The set of positive integers, 0 and negative integers is known as the set of

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Natural numbers

Rational numbers

All integers

Irrational numbers

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

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(0,0)

(a, b)

(-a, -b)

(1, 1)

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