6
PLAY Ver. 1.1
T uchpad uch
®
Incorporates
NEP 2020
School Fee
Protection*
Orange Global Olympiad
CYBER
Coding Classes
Computer Science Textbook | Windows 7 & MS Office 2010
6
PLAY Ver. 1.1
T uchpad
®
This book belongs to .................................................................................................... .....................
......................
.........................
......................
................................................................................................................ ................................................................................................................
Content
Team Orange
Computer Science Textbook | Windows 7 & MS Office 2010
Published by:
Orange Education Pvt Ltd 9, Daryaganj New Delhi-110002 Phone: 43776600 8588814859 Email:
[email protected] IE Code: 0511063121 Branches: • Chennai • Guwahati Regional Offices: • Ahmedabad • Bengaluru • Bhopal • Bhubaneswar • Dehradun • Hyderabad • Jaipur • Kochi • Kolkata • Lucknow • Mumbai • Patna • Raipur • Ranchi
Printed at:
© Publishers No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the publisher.
Disclaimer All product names, brand names and product logos mentioned or shown in this book are trademarks, registered trademarks, or trade names of their respective owners. The reproduction of these product names, brand names, and product logos and all instances of references of proprietary software in this book, are for educational purposes only. Although every safety measure has been taken to verify the precision of the information contained herein, the author(s) and publisher assume no responsibility for any error or omission. No liability is assumed for damages that may result from the use of information contained within.
School Fee Protection* School fee protection is an initiative by Orange Education to protect student’s fee in case of demise of the earning parent. Orange Education will bear the tuition fee of beneficiary as long as school remains subscribed to our books. All claims are subject to terms & conditions available on the website of Orange Education.
PREFACE Computer has been recognized as the most life changing and successful invention by man. Its applications have seeped into our lives so deeply that it’s difficult to imagine our lives in its absence. Hence, it is mandatory to impart computer education to the young minds so that they are well-equipped to take over the world of tomorrow.
We believe there can be no set curriculum for computer education because of its dynamic nature and constant evolution on a daily basis. It is a hands-on subject and too much of bookish knowledge can take away the pleasure of learning. All these points have been kept in mind while designing this book and to produce the content that not only appealing but also challenging to the students.
Touchpad PLAY (Version 1.1) series, based on Windows 7 and MS Office 2010 is designed carefully keeping in mind the overall growth of the child. The topics in the book have been hand picked after an extensive research by a team of experts of the subject based on utility, interest, skill, basic and trending applications in the global market. We have designed the lessons in such a way that they can be well-integrated with other subjects. Step by step approach will make it simple and easy for our students to grasp the concepts. Relevance of the topics was of prime importance throughout the compilation of the book. When our children learn to operate computer systems they will definitely be exposed to a lot of cyber threats so knowledge of cyber security becomes imperative. The students will face a global competition once they step out of the school so they should be updated with the latest technologies like Artificial Intelligence which holds a promising future in the times to come. Introduction of open source software like Tux Paint, Scratch and Python in the curriculum will definitely give our students an edge above others and hence make programming ideas more innovative and creative.
Learning is done best when it’s fun-filled and activity based. To ensure that the content intrigues the students at all times and keeps them interested throughout the course of the book, we have included interesting key features like Student Corner, Tech Funda, Clickipedia, Comp Caution, Reboot, One Touch Learn, Let’s Do It, Hands-On, Subject Enrichment—Fun In Lab, Teacher’s Corner, Periodic Assessment, Test Sheet, Project Work and Supplement Pages. Sample questions for Orange Global Olympiad (Cyber) have been included to promote awareness about the national level competition. These features will ensure better learning, assessment, evaluation and enable children to take their knowledge beyond the classroom.
We hope that the book contributes to the progressive development of computer aided education system and prepares our students for all upcoming challenges. We want the children to learn the concepts with not only the purpose of gaining knowledge but also to be able to find its applications. This will enable then to enrich the quality of their lives as well as others.
—Publisher
INCORPORATES NEP 2020 Created with new dimension of Joyful Learning along with completely mapped parameters of National Education Policy, 2020 Computational Thinking Enables to help solve problems and make thinking more engaging
Inter-Disciplinary Connects knowledge across the curriculum for holistic development
Art Integration Interlinks education with art and culture
Aimed at understanding and skill developing in specific subject
Critical Thinking
Communication
Strengthens logical decision making and innovation
Emphasis on soft skills and power of language
Creativity Enhances imagination to generate new ideas
Subject Enrichment
Experiential Learning
Life Skills & Values
Encourages ‘learning by doing’ through hands-on activities
Inclined towards empowering moral values in learner
DIGITAL RESOURCES For Teachers & Students
Only for Teachers
Orange Mobile App
Get it on
Test Paper Generator
Animated Audio & Video eBook Works offline after download
Generates Random & Manual Question Paper (QP)
Chapter Audio & Video Interactive Exercises with Answer Checks & Subjective questions Features like Spotlight, Zoom Sliders, Add Notes, Highlighter & Pencil on the eBook
Student Worksheet
Export Paper in Word format
Lesson Plan
Software Download Link
Practice Worksheets
(iii) Visit www.orangeeducation.in or scan the QR Code to register on our web support.
Answer Key
https://www
INSIDE THE SERIES
https://www
The key features of the series have been designed to ensure better learning, assessment and evaluation.
Learning Resources
Your Aim: This section describes the objective of the chapter.
Tech Funda: This section provides a practical information or tip to the students.
Clickipedia: This section provides interesting computer facts.
Tech Funda
Comp Caution: This section (in I, II) describes ways to handle the computer cautiously.
https://www
Reboot: This section provides a summary of the chapter for quick recapitulation.
You can also exit MS Word 2010 by pressing + F4 keys.
Hands-On: This section contains an activity for Home assignment.
Fun in Lab: This is a lab activity to develop practical skills. (Subject Enrichment)
Explore More: This section contains supplement topics for add-on knowledge. Explore More
Artificial Intelligence WHAT IS INTELLIGENCE? Humans are considered as the most intelligent species. Have you ever wondered why? It is because of the fact that we can use our brain. We develop the habit of reasoning and developing logic behind our decisions and thinking. This is a process that makes us intelligent.
HOW DOES A MACHINE BECOME INTELLIGENT? To make a machine understand things we need data, a lot of data. This data is basically information related to the things that we see around ourselves and how they interact. Machines are fed with lot of data and programmed with some aspects of human intelligence, including learning, problem solving, etc. When a machine is programmed to learn, it looks for patterns and trends within the data given to it and draws conclusions.
ARTIFICIAL INTELLIGENCE Artificial intelligence is a human attempt to convert mindless machine into intelligent beings that can think and take decisions like human beings. In your day to day life, you come across various machines for example, the toaster, the air conditioner, etc. Imagine if these machines became intelligent and would be able to work on their own. Artificial intelligence aims to copy the thinking process of humans. To do so, programmers have developed many algorithms which gather data and process them repeatedly to get results. Just like a human being who learns everything step by step.
COMPONENTS OF ARTIFICIAL INTELLIGENCE The human intelligence also consists of many parts like data collection, reasoning, observation, etc. Similarly, artificial intelligence also has different parts. AI includes Data Gathering, Artificial Neural Networks and Deep Learning. l
https://www
l
Data gathering: It refers to the process of obtaining information from the surrounding and other sources. Artificial neural network: It is a network of nodes that are connected to each other, just like the human brain. These nodes process the data and store the results in memory.
https://www
https://www
Your Aim
QR Code: Scan the QR Code given on the
to learn about:
first page of each chapter to start chapter animation.
l Data and Information l Limitations of a Computer l Input Device l Output Devices
l Characteristics of a Computer l Working of a Computer l Processing Device
Assessment Resources
Let's Do It: This section has subjective type questions.
One Touch Learn: This section has objective based quick questions.
Periodic Assessment: Four Periodic Assessments are included to evaluate the knowledge of the students.
Test Sheet: This section has questions to assess students.
Test Sheet-1
https://www
Periodic Assessment-1
(Based on chapters 1 to 4)
(Based on chapters 1 & 2)
A.
Look at the pictures.
Tick (3) the correct option. 1. Which of the following saves our time? (i) bag
3.
2.
Machines found outside the house.
Tick ( ) the activities which we can do on a computer. 1.
(iii) computer
(ii) monitor
1.
Machines are made by ................................. .
2.
A computer can solve ................................. .
3.
A computer is used to book ................................. .
4.
A keyboard has many ................................. .
5.
................................. is used to print text and pictures on paper.
2.
A.
Draw the following using Tux Paint tools that you have learnt. 1.
(iii) food (iii) CPU
Fill in the blanks.
Count and write the correct number in the boxes:
B.
(ii) messages
The ................................. is also called Visual Display Unit (VDU). (i) mouse
B.
(ii) doll
You can send and receive ................................. using a computer. (i) books
Machines found inside the house.
P R O J E C T WO R K
Section A A.
2.
1.
Project Work: This is an assessment to challenge the students to apply the concepts learnt.
https://www
Hints
Printer tickets man sums keys
2.
Section B A. 3.
4.
B.
20 Touchpad PLAY (Version 1.0)-I
Short answer type questions. 1.
Name any three machines that work on electricity.
2.
Name any two places where computers are used.
3.
Name any three machines.
4.
Which part of a computer helps you to type your name?
1.
How is a computer different from other machines?
2.
What is a desktop computer?
32 Touchpad PLAY (Version 1.0)-I
https://www
B.
Type the following text using various keys that you have learnt.
Long answer type questions.
Project Work
53
01
02 03
Categories of Computers and Computer Languages Categories of Computers Some other Special Computers Computer Languages Language Translator Working of Language Translators
Computer Software Software
05
17
Types of Software
More on Windows 7
07
24
Windows Media Player Using Removable Storage Devices Using Pictures Folder Features of Windows 7
Periodic Assessment-1
04
06
7
Tables in MS Word
31
08
32
09
45
Mail Merge Creating Mail Merge
Periodic Assessment-2 Test Sheet-1
54
Table and Charts in PowerPoint
63
Working with Slide Master Enhancing the look of a Presentation Applying Themes Changing Theme Colour Schemes Changing Theme Fonts Changing Theme Backgrounds Specifying Alignment Using Fill Effects Table in PowerPoint Charts in PowerPoint Creating a Chart Formatting a Chart
Periodic Assessment-3
Inserting a Table Entering Data in a Table Selecting Cells, Rows, Columns and Table Adding and Deleting Rows Adding and Deleting Columns Changing Column Width and Row Height Merging Cells Splitting Cells Moving and Resizing Tables Border and Shading Table Styles Aligning Text in Table Performing Calculations in Table
Mail Merge
Formatting Effects in PowerPoint 2010
Introduction to BASIC-256
77
Internet and E-mail
90
Installing BASIC-256 Opening BASIC-256 BASIC-256 Environment Creating your First BASIC-256 Program Saving a Program Running a Program Opening a Program Elements of BASIC-256 Programming Statements The Internet World Wide Web How the Web Works? Using Web Browser Using URLs E-mail Emoticons, Acronyms and Netiquettes
Periodic Assessment-4 Test Sheet-2 Project Work OGO Cyber Sample Questions Explore More (Robotics)
51 52
(vi)
76
102 103 105 108 111
1
Categories of Computers and Computer Languages
Your Aim
to learn about: Categories of Computers Some other Special Computers Computer Languages Language Translator Working of Language Translators
As you know that a computer is an electronic device used in different places for different purposes such as managing accounts in schools and reading at home. In this chapter, you will learn about the different types of computers and computer languages.
CATEGORIES OF COMPUTERS Nowadays, different types of computers are used that can be categorized on the basis of their: Type
Size, speed, processing power and price Let us learn about these categories in detail.
Type On the basis of their type or functioning, computers can be classified into three categories which are as follows: Analog Computer: refers to a computer that operates by measuring instead of counting. It measures the continuously changeable physical quantities like voltage, pressure, water flow, etc. Examples of analog computers are mercury thermometer, speedometer in cars, old radio, etc.
Analog Computer
Digital Computer: refers to a computer that uses digits (binary numbers 0’s, and 1’s) to generate, process and display data. All the modern computers that currently we use like Desktop, Laptop, and smartphone are examples of the digital computers. Some other examples of the digital computers are digital watch, digital thermometer, electricity meter, etc. Digital Computer
Categories of Computers and Computer Languages
7
Hybrid Computer: refers to a computer that provides the functionality of both an analog and a digital computers while processing and displaying data. It uses the speed of analog computer and accuracy from digital computer. Heart beat measuring machine used in hospital is the common example of the hybrid computer.
Size, Speed, Processing Power and Cost
Hybrid Computer
Computers differ in their size, processing power, speed and cost. On the basis of these factors, computers can be categorized as follows:
Microcomputer A microcomputer is a type of computer that has one microprocessor as its processing unit. It is a small and less expensive digital computer. This type of computers are made to be used by single user at a time. Some examples of microcomputer are: Desktop: It is a personal computer developed for regular use and generally placed at a single place on a desk or table. All its components such as keyboard, mouse and storage devices are connected through wire or wireless. Due to its size and power requirements, we cannot carry this type of computers.
Desktop
Laptop: It is a portable and small digital personal computer that is suitable for use while travelling. We can use a laptop computer by keeping it on our lap. A laptop computer has a built-in mouse, monitor and a keyboard. It also has a rechargeable battery. Laptop
Tablet: It is a portable digital computer smaller than the laptop computer. It has a touchscreen as its primary input device instead of mouse.
Tablet
Minicomputer A minicomputer is type of computer that is a bigger, more expensive, and more powerful than a microcomputer. It can contain one or more microprocessors as its processing unit. A minicomputer has the capability to serve a number of users simultaneously. It is also known as small or midsize server computer. Some common examples of minicomputers are PDP-11, PDP-8, HP-3000, etc. Minicomputer
8
Touchpad PLAY (Version 1.1)–VI
Clickipedia A server is also a computer that provides data and other services to other computers. It is used in offices where many computers are connected with each other.
Mainframe Computers Mainframe computers are very large, fast, powerful and more expensive than the minicomputers. They can have multiple microprocessors as their processing unit. Mainframe computers are generally used in big organisations where large amounts of data is used such as banks. Examples of mainframe computers are IBM zSeries, IBM 4381, ICL 39, etc.
Mainframe Computer
Supercomputers Supercomputers are the largest and fastest of all types of computers. Even some supercomputers require much space as that of a floor of a building. The cost of supercomputer is very high. They can process very large amounts of data quickly. Supercomputer
They are used in very big organisations and government departments to do tasks such as weather forecasting and rocket launching. PARAM was India’s first supercomputer developed in 1991. Some other examples of supercomputers are PACE, Titan, Sunway TaihuLight, Pratyush, Mihir, etc.
SOME OTHER SPECIAL COMPUTERS Apart from the types of computers that we have discussed in the previous sections, some other types of computers are embedded computers and handheld computers. Let us learn about these computers in detail.
Embedded Computers An embedded computer is a special type of microprocessor based system that is developed for performing a specific task. Let us learn about some of the embedded computers in detail. Categories of Computers and Computer Languages
9
Digital Camera Digital camera is one of the most commonly used embedded computers. Due to the use of embedded computers, cameras have become very smart and provides lots of features that were not present in older cameras. The main function of a camera is to capture photos and shoot videos. It also have a memory to store the captured photos and videos.
Digital Camera
ATM Automated Teller Machine (ATM) is another example of the embedded computers that allows us to withdraw money from our bank account from anywhere and anytime. ATM
Microwave The microwave that we use at our home is also an example of the embedded computer that allows us to warm and cook food. Microwave
Handheld Computers A handheld computer is a type of computer that can easily be stored in our pocket and used by holding it in our hands. Most of the handheld computers have a touchscreen in which we input data by using our fingers. Let us learn about some of the handheld computers.
Smartphone Smartphone is type of mobile phone that provides the facilities of a computer. It has a touchscreen and a rechargeable battery. A smartphone provides the features of an earlier cell phone and also some advanced features similar to a computer.
PDA
PDA
Smartphone
Personal Digital Assistant (PDA) is a hand held computer that has a touchscreen and allows to organize our daily routine works like schedules, calendars and address book information. It also has a pen like stylus which allows us to give input. It can also accepts handwritten input directly from the touchscreen.
10 Touchpad PLAY (Version 1.1)–VI
Smart Watch A smart watch is a computing device which you can wear on your wrist. It provides the features of an older watch and some advanced features of smartphone like connecting to the internet, using mobile apps, and making phone calls, etc. Smart Watch
Gaming Consoles
Gaming Console
Gaming console, also called video game console is a computing device specially designed to play video games. We can connect the gaming console with television to play games on television. Some commonly used examples of the gaming consoles are Sony Playstation, Nintendo GameCube, and Nintendo Wii.
COMPUTER LANGUAGES A computer cannot understand any instruction that we may give in English or in any other language. To communicate with the computers, we need some special languages which are called computer languages or programming languages. A computer language is the medium by which instructions are transmitted to the computer to perform a specific task. It is a set of words, symbols and codes that the computer can understand. It is used to write the computer programs. A computer program is a set of instructions written in a programming language. The process of writing a program is called programming. People who write the programs are called programmers. There are a number of programming languages worldwide. Some languages were developed for specific computers, others were developed for specific uses such as scientific or business applications. Computer languages are classified into two major categories: Computer Languages
Low-Level Language
Machine Language (1GL)
Assembly Language (2GL)
High-Level Language
Third Generation Language (3GL)
Fourth-Generation Language (4GL)
Natural Language (5GL)
Categories of Computers and Computer Languages 11
Low-Level Language (LLL) A low-level language is a programming language that is machine dependent. A program written in machine dependent language runs only on one particular type of computer. This type of programs are not easily portable to other type of computers. There are two categories of lowlevel languages which are Machine language and Assembly language.
Machine Language Machine language is the only language understood by the computer. It is also known as first generation language (1GL). Machine language is very difficult for programmers to use because it only consist of two digits, 0 and 1, called binary digits or bits. Where, the bit '0' represents the OFF state and the bit '1' represents the ON state.
Assembly Language To overcome the inconvenience of machine language, an assembly language was developed. It is also known as second generation language (2GL). It is the language in which program codes are written in the form of alphanumeric symbols called ‘Mnemonics’ instead of 0 and 1. In the assembly language, a programmer writes abbreviations such as A for addition, C for compare, L for load, and M for multiply. Because of this feature, it is also known as ‘Symbolic Language‘.
High-Level Language (HLL) High-level language is a programming language that enables a programmer to write programs that are machine independent. This type of languages are considered as high-level languages because they are closer to human languages and away from machine languages. The main advantages of high-level languages over low-level languages is that they are easier to read, write and maintain. There are three main categories of high-level languages which are third generation languages, fourth generation languages and natural languages.
Third Generation Languages (3GL) In third generation languages (3GL), the programmer writes a series of English like words that tell the computer what to accomplish and how to do it.
Many third generation languages also use arithmetic operators such as * for multiplication and + for addition. These English like words and arithmetic notations make it easy for a programmer to write the programs. Some early procedural 3GL are BASIC, PASCAL, C and FORTRAN. Some other advanced object-oriented 3GL are C++, Java, and C#.
Fourth Generation Languages (4GL) The fourth generation languages also use English like statements. They specify what the program should accomplish without explaining how. A 4GL is fast and requires less time and effort on the part of the programmer. In fact, 4GLs are so easy to use and programmers with very little programming background can develop programs. Examples of 4GL are SQL, Perl, Python, etc. 12 Touchpad PLAY (Version 1.1)–VI
Natural Languages (5GL) The fifth-generation languages, also known as natural languages are the programming languages that have visual tools to develop a program. Examples of fifth generation language include Mercury, OPS5, and Prolog. Natural languages are often associated with expert system and artificial intelligence. These systems are popular in the medical and scientific fields, but are not widely used in business applications.
Advantages of High-Level Languages High-level language is user friendly.
High-level language is similar to English language with vocabulary of words and symbols, therefore it is easier to run. High-level language requires less time to write a program. High-level language is easier to maintain.
High-level language is problem oriented rather than ‘Machine Based’.
Programs written in a high-level language can be translated into machine language and therefore can run on any computer with an appropriate translator.
Disadvantages of High-Level Languages A high-level language has to be translated into the machine language by a translator and thus it wastes a lot of the computer time. The object code generated by a translator might be inefficient as compared to an equivalent assembly language program.
LANGUAGE TRANSLATOR A language translator is a software that converts a high-level language program into a machine language. The language translator comprises of the following types:
Assembler An assembler is a program used to translate assembly language into machine language so that the computer can understand it. The assembler enables the computer to convert the assembly language instructions into machine code, i.e., 0’s and 1’s.
Compiler A compiler is a software that converts the entire source program into machine language before executing it. It converts the entire high-level language program into machine language at once. It displays the errors for the whole program together.
Interpreter An interpreter is also a separate program that converts the entire source program into machine language before executing it. It translates and executes one statement at a time. It reads a code statement, converts it to one or more machine language instructions and then executes them. It displays the errors one line at a time and it goes to the next line only after the error is corrected. Categories of Computers and Computer Languages 13
WORKING OF LANGUAGE TRANSLATORS The programs written in a high-level language must be translated into machine language by using a translator called assembler, compiler and interpreter. 3×2=6
Machine Code (01001) Input
High-level Language
Reb
Language Translator
Output
Machine Language
t
Digital computer refers to a computer that uses digits (binary numbers 0’s, and 1’s) to generate, process and display data.
An embedded computer is a special type of microprocessor based computer that is developed for performing a specific task.
A handheld computer can easily be stored in our pocket and used by holding it in our hands. Microcomputers are made to be used by one person at a time.
Minicomputers are small general-purpose computers having the capability to serve a number of users simultaneously. Mainframe computers are very large, fast and powerful computers.
Supercomputers are the largest and fastest of all types of computers and they can process very large amount of data quickly. A computer language is the means by which instructions and data are transmitted to the computer. Compilers and interpreters are types of software that convert the source program into machine language before executing it.
One Touch Learn A.
Tick ( ) the correct option. 1.
Which of the following is a microcomputer? a. Desktop
2.
b. PDP 11
c. PDA
Which type of computer operates by measuring instead of counting? a. Digital
14 Touchpad PLAY (Version 1.1)–VI
b. Hybrid
c. Analog
3.
Which of the following is an example of embedded computer? a. Microwave
b. Digital Camera
c. All of these www//:sptth
4.
Which of these language can be understood by computers? a. Assembly language
5.
C.
c. High-level language
Which of these is a third generation language? a. High-level language
B.
b. Machine language
b. Machine language
c. Assembly language
Write ‘T’ for true and ‘F’ for false. 1.
Minicomputers are smaller than microcomputers.
.........................
2.
Hybrid computer provides the functionality of an analog computer.
.........................
3.
PDP 11 is a supercomputer.
.........................
4.
Assembly language is a first generation language.
.........................
5.
High-level languages are machine independent.
.........................
Fill in the blanks using the words given below.
Hints assembler, programming, instructions, microcomputer, laptop 1.
A ............................ is a small computer that is used by one person at a time.
2.
A ............................ is a portable and small digital personal computer that is suitable for use while travelling.
3.
A computer language is the means by which ............................ are transmitted to the computer.
4.
The process of writing a program is called ............................ .
5.
An ............................ is a program used to translate assembly language into machine language.
Let's Do A.
It
www//:sptth
Short answer type questions. 1.
What is minicomputer?
........................................................................................................................................................................... 2.
What do you mean by embedded computer?
........................................................................................................................................................................... Categories of Computers and Computer Languages
15
T uchpad
®
PLAY Ver. 1.1
Spotl ght Tech Funda
What’s New in Ver. 1.1? NEP 2020
Clickipedia
Hands-On
Comp Caution
Art Integration
Inter-Disciplinary
Subject Enrichment
Computational Thinking
Critical Thinking
Communication
Creativity
Experiential Learning Life Skills & Values
Latest Trends
Explore More
QR Code Artificial Intelligence
Introduce yourself to a world of digital content. Open the camera or QR Code reader in your phone and scan the QR Code for chapter animation.
Robotics
Teaching and Learning Solutions Animated e-Book
Mobile App
Teacher Resource Materials
Webinars & Training Workshops
Computer Lab Health Check-up
Software Tech Support
Protect Yourself From Covid-19
Returning
Stay 6 feet apart from others in school and in the bus.
Back to
school
On reaching school, go straight to your classroom. Wash Your Hands Frequently
Wear a Face Mask
Stay at Home if You are Sick
Use your own things so virus cannot be transmitted. Cough or sneeze into your elbow or use a tissue.
Buy Online
CE
RTIFIED
ISO 5
N
20
Y
9001
1
COMPA
@OrangeEducationPvtLtd
Orange Education Pvt Ltd Adding value to ‘Education’
9, Daryaganj, New Delhi-110002 (India) Phone: +91-11-43776600 E-mail:
[email protected] Website: www.orangeeducation.in
MRP: ` 296
(inclusive of all taxes)
9 789390 47544 5