Question # 1

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

Every real number is

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a positive integer

a rational number

a negative integer

a complex number

What is the conjugate of -7 -2i?

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-7 + 2i

7 + 2i

7 -2i

None of these

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1

3

2-i

-1

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

(a +bi) -c (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

Name the property used in a (b-c) = ab - ac

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commutative property of multiplication

distributive property of multiplication

associative property of multiplication

multiplicative inverse

√-1 b=

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b

2

2b

None of these

The negative square root of 9 can be written as:

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-√9

√9

√18

-√18

Additive inverse of - a - b is

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a

-a + b

a - b

a + b

O is ______

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A positive integer

A negative integer

A natural number

An integer

(a-1)-1 =

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a-1

a

-a

None of above

If z₁ = 1 + 2i, z₂ = 3 + 4i then

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z₁ > z₂

z₁ = z₂

z₁ < z₂

None of these

In polar form of complex number r =

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Principle of equality of Fractions

Rule for product of fraction

Golden rule of fraction

Rule of quotient of Fraction

Name the property used in 4 x (5 x 8) = ( 4 x 5) x 8

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Associative property of addition

Associative property of multiplication

Additive identity

Multiplicative identity

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Closure law of addition

Associative law of addition

Commutative law of multiplication

Associative law of multiplication

∀a,b,c∈R, a >b ∧ b>c ⇒ a >c is

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Trichotomy property

Transitive property

Symmetric property

Additive property

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15

15 i

-15 i

-15

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

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In (x + iy), y is called as

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Imaginary part

Complex number

Real part

None of above

i¹⁰¹ =

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i

i²

-i

-1

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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

202.04 is an example of

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Recurring decimals

Non-recurring decimals

Terminating decimals

None of above

√2 is a number

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Rational

Irrational

Even

Odd

6 is

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A prime integar

An irrational number

A rational number

An odd integer

Gooch crucible is made of :

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Brass.

Porcelain.

Bronze.

Gold.

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A complex number

A rational number

A natural number

An irrational number

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