Question # 1

The multiplicative inverse of 2/3 is

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3/2

-2/3

-3/2

1

∀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

What is the conjugate of -6 -i?

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-6 +i

6+i

-6 -i

6 -i

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

∀a,b, c ε R ac = bc ⇒ a = b, c ≠ 0 is a

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Symmetric property

Cancellation property w.r.t multiplication

Reflexive property

Transitive property

Every whole number is

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A real number

An irrational number

A prime number

A negative integer

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Associative property of addition

Associative property of multiplication

Commutative property of addition

Commutative property of multiplication

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Reflexive property

Symmetric property

Transitive property

Additive property

Which of the following has the same value as i¹¹³?

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i

-1

-i

1

√23 is

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A rational number

A irrational number

An even integer

A factor of 36

Associative law of multiplication

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ab = ba

a(bc) = (ab) c

a(b+c) = ab + ac

(a + b)c = ac + bc

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1

-i

i

0

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

If z₁ =√-36 ,z₂ =√-25,z3 =√-16 then

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15

15i

-15i

-15

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Principle of equality of Fractions

Rule for product of fraction

Golden rule of fraction

Rule of quotient of Fraction

Q∪ Q' =

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Q

Q'

N

R

Every irrational number is

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A real number

A prime number

A natural number

An integer

Associative law of multiplication

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ab - ba

a(bc) = (ab) c

a(b + c) = ab +ac

(a +b)c = ac + bc

Any recurring decimal represents a

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Irrational no

Integer

Rational no

None of these

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x

y

The identity element with respect to subtraction is

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0

-1

0 and 1

None of thes

0 (zero) is

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An irrational number

A rational number

A negative integer

A positive number

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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

The square roots of negative numbers is called

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Real no

Complex no

Positive no

Negative no

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