NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.1 are part of NCERT Solutions for Class 9 Maths. Here we have given NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.1.
- Number Systems Class 9 Ex 1.1
- Number Systems Class 9 Ex 1.2
- Number Systems Class 9 Ex 1.3
- Number Systems Class 9 Ex 1.4
- Number Systems Class 9 Ex 1.5
- Number Systems Class 9 Ex 1.6
| Board | CBSE |
| Textbook | NCERT |
| Class | Class 9 |
| Subject | Maths |
| Chapter | Chapter 1 |
| Chapter Name | Number Systems |
| Exercise | Ex 1.1 |
| Number of Questions Solved | 4 |
| Category | NCERT Solutions |
NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.1
Ex 1.1 Class 9 Maths Question 1.
Is zero a rational number? Can you write it in the form \(\cfrac { P }{ q }\), where p and q are integers and q ≠ 0?
Solution:
Yes, zero is a rational number.
Zero can be written in any of the following forms :
\(\cfrac { 0 }{ 1 } ,\cfrac { 0 }{ -1 } ,\cfrac { 0 }{ 2 } \cfrac { 0 }{ -2 }\)
Thus, 0 can be written as \(\cfrac { P }{ q }\), where p = 0 and q is any non-zero integer.
Hence, 0 is a rational number.
Ex 1.1 Class 9 Maths Question 2.
Find six rational numbers between 3 and 4.
Solution:
The rational numbers between 3 and 4.
Ex 1.1 Class 9 Maths Question 3.
Find five rational numbers between \(\cfrac { 3 }{ 5 }\) and \(\cfrac { 4 }{ 5 }\).
Solution:
Since we want 5 rational numbers between \(\cfrac { 3 }{ 5 }\) and \(\cfrac { 4 }{ 5 }\), so we write
Ex 1.1 Class 9 Maths Question 4.
State whether the following statements are true or false. Give reasons for your answers.
- Every natural number is a whole number.
- Every integer is a whole number.
- Every rational number is a whole number.
Solution:
(1) True: Every natural number lies in the collection of whole numbers.
(2) False: -3 is not a whole number.
(3) False: \(\cfrac { 3 }{ 5 }\) is not a whole number.
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