Mathematics MCQs Chapter 1 Class 11

Created on January 19, 2022

Chapter 1: Number Systems

1 / 27

(?, ?)(?, ?) =

-15

−8?

15

8?

2 / 27

If ? is any non-zero real number, then multiplicative inverse is

not defined

-1/?

– ?

1/?

3 / 27

. If ? < ? then

? < ?

1/? < 1/?

1/? > 1/?

? − ? > 0

4 / 27

Multiplicative inverse of ′?′ is

1

not defined

0

any real number

5 / 27

Golden rule of fraction is that for ? ≠ ?, ?/? =

??/?

??/b

??/??

6 / 27

For all ? ∈ ? , ? = ? is …. Property.

Transitive

Symmetric

Trichotomy

Reflexive

7 / 27

The multiplicative inverse of (?, −?) is:

(− 4/65,7/65 )

( 4/65, −7/65 )

(4/65,7/65 )

(− 4/65, −7/65)

8 / 27

The set {?, −?} possesses closure property ?. ?. ?

+

−

×

÷

9 / 27

(−?)^−??/? =

– ?

?

-1

1

10 / 27

The multiplicative identity of complex number is

(1,1)

(0,0)

(1,0)

(0,1)

11 / 27

For all ?, ? ∈ ? , ? = ? ⟹ ? = ? is called….. property.

Reflexive

Transitive

Trichotomy

Symmetric

12 / 27

For any complex number ?, it is always true that |?| is equal to:

| − ?|

all of these

|?|

13 / 27

For any complex number ?, it is always true that |?| is equal to:

|?|

| − ?|

all of these

14 / 27

?^?? equals:

-1

?

– ?

1

15 / 27

? is

Natural number

Irrational

Rational

None

16 / 27

The numbers which can be written in the form of ?/? , ?, ? ∈ ? , ? ≠ ? are :

Whole number

Irrational number

Rational number

Complex number

17 / 27

??/? is

a whole number

Irrational

Rational

an integer

18 / 27

The modulus of ? = ? + ?? is

√(?2 + ?2)

√(? + ?)

√(?2 − ?2)

? − ?

19 / 27

The additive identity in set of complex number is

(0,0)

(1,1)

(1,0)

(0,1)

20 / 27

A decimal which has a finite numbers of digits in its decimal part is called______ decimal.

Non recurring

Recurring

Non-Terminating

Terminating

21 / 27

A decimal which has a finite numbers of digits in its decimal part is called decimal.

(b) (c) (d)

Terminating

Non-Terminating

Non recurring

Recurring

22 / 27

The multiplicative identity of complex number is

(0,1)

(1,0)

(0,0)

(1,1)

23 / 27

√3 is __________

Prime

Integer

Irrational

Rational

24 / 27

The product of two conjugate complex numbers is

A real number

not defined

an imaginary number

may be an irrational number

25 / 27

A recurring decimal represents_____

Rational number

None of these

Real number

Natural number

26 / 27

Every recurring decimal is

a rational number

an irrational number

a prime number

a whole number

27 / 27

The additive identity in set of complex number is

(1,1)

(0,0)

(0,1)

(1,0)

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Mathematics MCQs Chapter 1 Class 11

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A decimal which has a finite numbers of digits in its decimal part is called decimal.

The additive identity in set of complex number is

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