# HSSlive: Plus One & Plus Two Notes & Solutions for Kerala State Board

## AP Board Class 9 Maths Chapter 1 Real Numbers Ex 1.2 Textbook Solutions PDF: Download Andhra Pradesh Board STD 9th Maths Chapter 1 Real Numbers Ex 1.2 Book Answers

 AP Board Class 9 Maths Chapter 1 Real Numbers Ex 1.2 Textbook Solutions PDF: Download Andhra Pradesh Board STD 9th Maths Chapter 1 Real Numbers Ex 1.2 Book Answers

## Andhra Pradesh State Board Class 9th Maths Chapter 1 Real Numbers Ex 1.2 Books Solutions

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## AP Board Class 9th Maths Chapter 1 Real Numbers Ex 1.2 Textbooks Solutions with Answer PDF Download

Find below the list of all AP Board Class 9th Maths Chapter 1 Real Numbers Ex 1.2 Textbook Solutions for PDF’s for you to download and prepare for the upcoming exams:

## AP State Syllabus 9th Class Maths Solutions 1st Lesson Real Numbers Exercise 1.2

Question 1.
Classify the following numbers as rational or irrational.
i) 27‾‾‾√
ii) 441‾‾‾‾√
iii) 30.232342345
iv) 7.484848
v) 11.2132435465
vi) 0.3030030003
Solution:
i) 27‾‾‾√ – irrational number
ii) 441‾‾‾‾√ = 21 – rational
iii) 30.232342345 – irrational number
iv) 7.484848 – rational number
v) 11.2132435465 – irrational number
vi) 0.3030030003 – irrational number

Question 2.
Explain with an example how irrational numbers differ from rational numbers ?
Solution:
Irrational numbers can’t be expressed in 𝑝𝑞 form where p and q are integers and q ≠ 0.
E.g.2‾√,3‾√;5‾√,7‾√ etc.
Where as a rational can be expressed in 𝑝𝑞 form
E.g. :- -3 = −31 and 54 etc.

Question 3.
Find an irrational number between 57 and 79. How many more there may be ?
Solution :
The decimal forms of 57 and 79 are
57=0.714285⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯….,79=0.7777……=0.7⎯⎯⎯
∴ An irrational between 57 and 79 is 0.727543…………
There are infinitely many irrational numbers between 57 and 79.

Question 4.
Find two irrational numbers between 0.7 and 0.77.
Solution:
Two irrational numbers between 0.7 and 0.77 can take the form
0.70101100111000111…………. and 0.70200200022……………

Question 5.
Find the value of √5 uPto 3 decimal places.
Solution:

[√5 is not exactly equal to 2.2350679………….. as shown ¡n calculators]

Question 6.
Find the value of √7 upto six decimal places by long division method.
Solution:

Question 7.
Locate 10‾‾‾√ on number line.

Step – 1 : Draw a number line.
Step – 2 : Draw a rectangle OABC at zero with measures 3 x 1. i.e., length 3 units and breadth 1 unit.
Step – 3 : Draw the diagonal OB.
Step – 4 : Draw an arc with centre ‘O’ and radius OB which cuts the number line at D.
Step – 5 : ‘D’ represents $$\sqrt{\mathrm{10}}[latex] on the number line. Question 8. Find atleast two irrational numbers between 2 and 3. Solution: An irrational number between a and b is Tab [latex]\sqrt{\mathrm{ab}}$$ unless ab is a perfect square.
∴ Irrational number between 2 and 3 is √6

∴ Required irrational numbers are 61/2, 241/4

Method – II:
Irrational numbers between 2 and 3 are of the form 2.12111231234………….. and 3.13113111311113…….

Question 9.
State whether the following statements are true or false. Justify your answers.
Solution:

1. Every irrational number is a real number – True (since real numbers consist of rational numbers and irrational numbers)
2. Every rational number is a real number – True (same as above)
3. Every rational number need not be a rational number – False (since all rational numbers are real numbers).
4. 𝑛√ is not irrational if n is a perfect square – True. (since by definition of an irrational number).
5. 𝑛√ is irrational if n is not a perfect square – True. (same as above)
6. All real numbers are irrational – False (since real numbers consist of rational

## Andhra Pradesh Board Class 9th Maths Chapter 1 Real Numbers Ex 1.2 Textbooks for Exam Preparations

Andhra Pradesh Board Class 9th Maths Chapter 1 Real Numbers Ex 1.2 Textbook Solutions can be of great help in your Andhra Pradesh Board Class 9th Maths Chapter 1 Real Numbers Ex 1.2 exam preparation. The AP Board STD 9th Maths Chapter 1 Real Numbers Ex 1.2 Textbooks study material, used with the English medium textbooks, can help you complete the entire Class 9th Maths Chapter 1 Real Numbers Ex 1.2 Books State Board syllabus with maximum efficiency.

## FAQs Regarding Andhra Pradesh Board Class 9th Maths Chapter 1 Real Numbers Ex 1.2 Textbook Solutions

#### Can we get a Andhra Pradesh State Board Book PDF for all Classes?

Yes you can get Andhra Pradesh Board Text Book PDF for all classes using the links provided in the above article.

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