Question # 1

The set of natural no. is closed under

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multiplication

subtraction

difference

division

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1

-1

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real part of z

imaginary part of z

conjugate of z

modulus of z

√2 +√3 +√5) = (√2 +√3 +√5: this property is called

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associative property w.r.t addition

commutative property

Closure property w.r.t addition

Additive identity

In R, the multiplicative identity is

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0

1

-1

None

0 (zero) is

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An irrational number

A rational number

A negative integer

A positive number

The additive identity of real number is

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1

2

1/2

0

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Associative law of multiplication

Commutative law of addition

Commutative law of multiplication

Associative law of addition

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i =

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√1

√2

√-2

√-1

√2 is a number

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Rational

Irrational

Even

Odd

i⁹ =

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i²

-1

1

i

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

If ∀a,b ε R,then a +b ε R is a property

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Closure law of addition

Associative law of addition

Additive inverse

Additive identity

The order axioms are satisfied by set of

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C

C and R

R

None of these

In polar form of complex number r =

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

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Additive inverse

Multiplication inverse

Additive identity

Multiplication identity

Gooch crucible is made of :

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Brass.

Porcelain.

Bronze.

Gold.

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1

-1

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Rational

Irrational

Even

Odd

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15

15 i

-15 i

-15

The identity element with respect to subtraction is

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0

-1

0 and 1

None of thes

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

In R the number of identity elements w.r.t.'.' is

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One

Two

Three

Four

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Principle of equality of fractions

Rule for product of fractions

Golden rule for fractions

Rule for quotient of fractions

In R, the multiplicative inverse of a is

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0

1

-a

1/a

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Principle of equality of fractions

Rule for product of fraction

Rule for quotient of fraction

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Trichotomy property

Additive property of inequality

Transitive property

Multiplicative property

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