Chapter 1 Number Systems Ex 1.3
Question 1.
Write the following in decimal form and say what kind of decimal expansion each has
![NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.3 img 1](http://104.199.181.145/wp-content/uploads/2022/05/ncert-solutions-for-class-9-maths-chapter-1-number-5.png)
Solution:
![NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.3 img 2](http://104.199.181.145/wp-content/uploads/2022/05/ncert-solutions-for-class-9-maths-chapter-1-number-6.png)
![NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.3 img 3](http://104.199.181.145/wp-content/uploads/2022/05/ncert-solutions-for-class-9-maths-chapter-1-number-7.png)
![NCERT Solutions for Class 9 Maths Chapter 1 Number Systems Ex 1.3 img 4](http://104.199.181.145/wp-content/uploads/2022/05/ncert-solutions-for-class-9-maths-chapter-1-number-8.png)
Question 2.
![](https://rajboardexam.in/wp-content/uploads/2022/07/image-522.png)
Solution:
Question 3.
![](https://rajboardexam.in/wp-content/uploads/2022/07/image-523.png)
![](https://rajboardexam.in/wp-content/uploads/2022/07/image-524.png)
Question 4.
![](https://rajboardexam.in/wp-content/uploads/2022/07/image-525.png)
Question 5.
![](https://rajboardexam.in/wp-content/uploads/2022/07/image-526.png)
![](https://rajboardexam.in/wp-content/uploads/2022/07/image-527.png)
Question 6.
![](https://rajboardexam.in/wp-content/uploads/2022/07/image-528.png)
Question 7.
Write three numbers whose decimal expansions are non-terminating non-recurring.
Solution:
0.74074007400074000074…
0.6650665006650006650000…
0.70700700070000…
Question 8.
![](https://rajboardexam.in/wp-content/uploads/2022/07/image-529.png)
Solution:
To find irrational numbers, firstly we shall divide 5 by 7 and 9 by 11,
so,
Question 9.
Classify the following numbers as rational or irrational
![](https://rajboardexam.in/wp-content/uploads/2022/07/image-530.png)