Question # 1

Choose an answer

O is ______

Choose an answer

A positive integer

A negative integer

A natural number

An integer

Choose an answer

The polar form of complex number x ≠ I y =

Choose an answer

r cos θ+ r sin θ

r cos θ+ is sin θ

cos θ+ r sin θ

i cos θ+ i sin θ

Name the property used in 4 + 9 = 9 + 4

Choose an answer

Associative property of addition

Commutative property of addition

Distributive property

Additive identity

∀x, y ∈ R, either x = y or x > y or x < y is

Choose an answer

Transitive property

Reflexive property

Trichotomy property

None of these

1/3 is a decimal

Choose an answer

Recurring

Terminating

Non-terminating

None of the above

Every prime number is also

Choose an answer

Rational number

Even number

Irrational number

Multiple of two numbers

√25 is a number

Choose an answer

Rational

Irrational

Natural

Odd

Every real number is

Choose an answer

A complex number

A rational number

A natural number

A prime number

A subset of set of complex number whose elements are of the form (a,0) is called

Choose an answer

Real number

Complex number

Rational number

Irrational number

If in a set of real no a is multiplicative identity then

Choose an answer

a,a = a²

a,a = 1

a,a = 0

None of these

6 is

Choose an answer

A prime integar

An irrational number

A rational number

An odd integer

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

Choose an answer

x = 2, y = -1

x = -2, y = 1

x = 2, y = -i

x = 2, y = 2

If z₁ = (a,b), z₂=(c,d), then z₁ z₂ = -------------------

Choose an answer

(ac,bd)

(ac+bd, ad-bc)

(ac-bd , ad+bc)

(ac-bd , ad-bc)

Choose an answer

The additive inverse of 0 is

Choose an answer

1

-1

0

Does not exist

∀ a ε R ∃ o ε R such that a + v = 0 + a = a is property of

Choose an answer

Commutative law of addition

Associative law of addition

Additive identity

Additive inverse

Every real number is

Choose an answer

a positive integer

a rational number

a negative integer

a complex number

2.333....is a

Choose an answer

Irrational no

Complex no

Rational no

None of these

(√3+√5)+√7 = √3 +(√5 +√7) property used in above is

Choose an answer

Commutative property of addition

Closure property of addition

Additive inverse

Associative property w.r.t to adition

What is the conjugate of -7 -2i ?

Choose an answer

-7 + 2i

7 +2i

7 -2i

√53

Rational number is a number which can be written as a terminating decimal fraction or a

Choose an answer

Non-terminating decimal fraction

Non-recurring

Recurring decimal fraction

a, b and c

∀x,y∈R and x> 0 , y>0, if x > y

Choose an answer

None of these

If z₁ =√-36 ,z₂ =√-25,z3 =√-16 then

Choose an answer

15

15i

-15i

-15

(a,b) +(-a,-b) =

Choose an answer

(0,0)

(a,b)

(-a,-b)

(1,1)

∀a,b, c ε R,a +c = b + c = > a = b

Choose an answer

Reflexive property

Symmetric property

Cancellations property w.r.t. addition

Transitive property

a.a^-1 = a^-1.a = 1 is a

Choose an answer

Commutative law of multiplication

Multiplicative identity

Associative law of multiplication

Multiplicative inverse

I is not

Choose an answer

Real number

Natural number

Prime Number

Whole Number

More Classes

Other Links

ECAT Mathematics Chapter 1 Number System Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer