Question # 1

Which element is the additive inverse of (a,b) in Complex numbers

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(a,0)

(0,b)

(a,b)

(-a,-b)

1/3 is ______

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A prime number

An integer

A rational number

An irrational number

In R, the additive identity is

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0

1

-1

None

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

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1

4

8

12

Every real number is

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A complex number

A rational number

A natural number

A prime number

The sum of complex number (a,b) and (c,d) is

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Associative law of multiplication

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ab = ba

a(bc) = (ab) c

a(b+c) = ab + ac

(a + b)c = ac + bc

√2 is a number

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Rational

Irrational

Even

Odd

3/2 is

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An irrational number

Whole number

A positive integer

A rational number

The set of natural no. is closed under

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multiplication

subtraction

difference

division

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The set of rationals numbers between 0 and I is

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Finite

Null set

Infinite

None of these

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None of these

Which element is the additive inverse of (a, b) in Complex numbers?

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(a, 0)

(0, b)

(a, b)

(-a, -b)

i²=

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1

2

-1

0

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

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- x

Infinite set

Φ

{-4,4}

Name the property used in 4.1 + (-4.1) = 0

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Additive inverse

Multiplication inverse

Additive identity

Multiplication identity

a >b ⇒a +c >b +c is known as

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Trichotomy property

Additive property of inequality

Transitive property

Multiplicative property

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For each real number, there is a number which is its

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Negative

Possitive

Opposite

Similar

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Rule of quotient of fraction

Golden rule of fraction

Rule for product of fraction

Principle for equality of fraction

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z is purely imaginary

a is any complex number

z is real

None of these

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

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√5

√7

-1-2i

√3

The decimal fraction in which we have finite number of digits in its decimal part is called.

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recurring decimal fraction

Non terminating faction

Non recurring fraction

terminating decimal fraction

The square root of 2i - 20i is

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±(5 - 2i)

±(5+ 2i)

(5 - 2i)

None of these

i =

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If a and b are real numbers then a+b is also real number this law is called

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associative law of addition

closure law of addition

Distributive law of addition

Commutative law of addition

In R, the multiplicative identity is

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0

1

-1

None

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Principle of equality of fractions

Rule for product of fraction

Rule for quotient of fraction

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