Question # 1

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In R, the additive inverse of a is

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0

1

-a

1/a

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

The value of x and y when (x + iy)2 = 5 - 4i

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x = 2, y = -1

x = -2, y = 1

x = 2, y = -i

x = 2, y = 2

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

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(a+bi) - (c+di)=

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(a+b) = (c+d)

(a+c) + i(b+d)

(a - c) + (c- d)i

(a - c)+ (b - d)i

Every irrational number is

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A real number

A prime number

A natural number

An integer

In set builder notation the set {0,1,2,........100} can be written as

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{x / xε B ∧ x ≤ 100}

{x / x ∈ W ∧ x < 101}

{x / x ∈ Z ∧ x < 101}

The set of first 100 whole numbers

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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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Rule of quotient of fraction

Golden rule of fraction

Rule for product of fraction

Principle for equality of fraction

In (x + iy), y is called as

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Imaginary part

Complex number

Real part

None of above

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Every natural number is

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A prime number

An irrational number

An integer

An even number

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15

15 i

-15 i

-15

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The multiplicative inverse of -3i is

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3i

-3i

-1/3i

1/3 i

If a set S contains n elements then P (S) has ........ number of elements

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2ⁿ

2ⁿ²

2.n

n²

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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A natural number

A rational number

An irrational number

A whole number

i =

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√1

√2

√-2

√-1

π is ______

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A complex number

A rational number

A natural number

An irrational number

If 4 > b or a < b than a = b is a

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Additive property

Transitive property

Trichotomy property of inequality

None of above

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0

1

-1

2

Every whole number is

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A real number

An irrational number

A prime number

A negative integer

i³ =

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-1

i

-i

1

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 identity element with respect to subtraction is

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0

1

-1

Does not exist

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

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Any recurring decimal represents a

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Irrational no

Integer

Rational no

None of these

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