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NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.1

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.
NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.1-1
NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.1-2

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
NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.1-3
Ex 1.1 Class 9 Maths Question 4.
State whether the following statements are true or false. Give reasons for your answers.

  1. Every natural number is a whole number.
  2. Every integer is a whole number.
  3. 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.

We hope the NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.1 help you. If you have any query regarding NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.1, drop a comment below and we will get back to you at the earliest.

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