# NCERT Solutions for Class 9 Maths Chapter 1 Exercise 1.5

NCERT Solutions for Class 9 Maths Chapter 1 Exercise 1.5 Number Systems download in Hindi Medium and English Medium free to download in PDF form for session 2020-21 updated according to new CBSE Curriculum.

NCERT Solutions 2020-2021 are available to View in Video Format or use it online only. NCERT Solutions for 9 Maths are given on one page to download. These solutions are further updated according to CBSE Syllabus 2020-21 academic session. Download (Exercise 1.5 ) in PDF format to use it offline.## NCERT Solutions for Class 9 Maths Chapter 1 Exercise 1.5

Class: | 9 |

Subject: | Maths – Number Systems |

Chapter 1: | Exercise 1.5 |

### 9th Maths Chapter 1 Exercise 1.5 Sols

Here the solutions are given to use online, if you want to download these solutions in English Medium PDF format follow the link given at the top of the page. Go back to Class 9 Maths Chapter 1 Solutions main page to see other exercises. All the solutions are updated for new academic session 2020-2021 on the basis of latest NCERT Books 2020-21.

### 9th Maths Exercise 1.5 Solutions

#### 9th Maths Exercise 1.5 Solutions in Hindi & English

NCERT Solutions of Maths in Hindi Medium as well as English Medium are updated for new academic session 2020-21 and free to download in PDF. These solutions are prepared on the basis of new NCERT Books 2020-21 for CBSE and UP Board Students. Go back to Class 9 Maths Chapter 1 main page solutions to see other exercises.

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###### Important Questions on 9th Maths Exercise 1.5

1. Check whether the following number is rational or irrational number. √5×√125

2. Add √225 + 2√27 and -5√5 – √3.

3. Rationalize the denominator: 1/[√3 + √5 + √7].

4. If a = [√7 – √6]/[√7 + √6] and b = [√7 + √6]/[√7 – √6], then find the value of a² + b² + ab.

5. निम्नलिखित को सरल कीजिए: √45 – 3√20 + √45.

6. निम्नलिखित के हर का परिमेयीकरण कीजिए: √40/√3.

7. निम्नलिखित में a और b के मान ज्ञात कीजिए कीजिए: [5 + 2√3]/[7 + 4√3] = a – 6√3.

8. निम्नलिखित के हर का परिमेयीकरण कीजिए और फिर √2 = 1.414, √3 = 1.732 और √5 = 2.236 लेते हुए, तीन दशमलव स्थानों तक [√10 – √5]/ √3 का मान ज्ञात कीजिए।

9. यदि √2 = 1.414 है तो √8 + √50 + √72 + √98 का मान ज्ञात कीजिए।

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