Presents

CSAT Paper -IIUPSC Civil Services Examination

CSATU

PSCCivil Services Aptitude Test

PAPER - II

A very comprehensive book for Civil Services Aptitude Test (CSAT), as per the syllabus prescribed by the Union Public Service Commission.

This book has five sections, that is, Basic Numeracy, General Mental Ability, Logical Reasoning & Analytical Ability, Data Interpretation and Decision Making & Problem Solving. Each chapter contains Theoretical aspect at the very beginning followed by Solved Examples & Practice Exercises.

u Covers almost all kinds of questions expected in CSAT.

u Various types of shortcuts, tricks and tech-niques to save precious time.

u Vedic maths and various common observations for scientific learning.

u 25-30 chapters which cover almost all aspects of Quantitative Aptitude, Reasoning, Data Interpretation etc.

u Lucid language which makes problem solving a very enjoyable affair for candidates of various backgrounds.

This Book is available at all MADE EASY Centres (Delhi)and leading book stalls across India.

For more details, visit us at: www.madeeasypublications.org

NEM SINGH

I . R . S .

by

Corporate O�ce: 44-A/1, Kalu Sarai, New Delhi-110016

Website: www.madeeasypublications.org

Phone: 011-26560862, 011-32059862

MADE EASY

UPSC

Civil Services Aptitude Test

Theory and Problems Explanations

Solved Examples & Practice Exercises with Detailed Solutions

MADE EASY Publications

Corporate Office: 44-A/1, Kalu Sarai, New Delhi-110016Website: www.madeeasypublications.org | Phone: 011-45124612, 09958995830E-mail: madeeasydelhi@gmail.com

UPSC-CSAT (Paper-II) : Theory & Problems with ExplanationsCopyright © 2012, by MADE EASY Publications.All rights are reserved. No part of this publication may be reproduced, stored in or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photo-copying, recording or otherwise), without the prior written permission of the above mentioned publisher of this book.

First Edition: 2012ISBN: 978-93-81069-35-6

Typeset at: MADE EASY Publications, New Delhi-110016

MADE EASY

This book is dedicated to my parents,

for their showering blessings.

Finally, I would like to thank my wife,

for the continuous support and encouragement,

throughout the preparation of the book.

PREFACE

I have immense pleasure in placing this book CSAT Paper-II before the aspirants of the UPSC

Examinations. Civil Services Examination is considered to be amongst the toughest exam in

India. Competition level in this exam is very high but the success ratio is least. With some

experience in this field, initially as an aspirant and later on as a Civil Servant, my endeavor is

to provide best possible guidance to all future aspirants.

This comprehensive volume would enable the readers to acquire complete and detailed

understanding of various aspect of syllabus prescribed by the UPSC. My first-hand experience

as a faculty member imparting guidance to the students has been a great source of inspiration

and helped me immensely in writing this book. Preparation for Civil Services Examination, taking

Mathematics as optional subject also helped me sharpen the ideas and arguments developed

here.

This book has five sections, that is, Basic Numeracy, General Mental Ability, Logical Reasoning

& Analytical Ability, Data Interpretation and Decision Making & Problem Solving. Each chapter

contains Theoretical aspect at the very beginning followed by Solved Examples & Practice

Exercises.

I am grateful to my parents, who have been showering their blessings. I offer my deep sense of

gratitude to my Teachers of Jawahar Navodaya Vidyalaya and Professors of NIT Raipur for their

blessings and guidance. I would like to acknowledge the encouragement and useful guidance

provided by my seniors and colleagues serving in IAS, IFS, IPS, IRS and other Services. My

publisher Mrs. & Mr. B. Singh have been a constant source of support and encouragement.

My special thanks to the MADE EASY team especially Mr. Vinod Kumar and Mr. Dalbir Negi for

bringing out this book at the earliest in the hands of readers.

Finally, my family members particularly my wife Preeti has been a biggest supporter as well as

constructive critique of this book. As an aspirant preparing for Civil Services Examination she

encouraged me throughout the preparation and provided feedback from a recent student’s

perspective.

Suggestions and constructive comments from the readers for improvement of this book are

welcome.

NEM SINGH(Indian Revenue Service)

AB

C

Basic Numeracy(Numbers and their Relations, Orders of Magnitude etc. (Class X level)

General Mental Ability

Logical Reasoning & Analytical Ability

1. Number System 11Section

Section

Section

1. Average 41

2. Ratio & Proportion 53

3. Percentage 67

4. Profit & Loss 85

5. Simple Interest & Compound Interest 99

6. Time & Work 113

7. Time, Speed & Distance 133

8. Clocks and Calendar 161

9. Surds, Indices & Logarithms 179

10. Progression 189

11. Permutations & Combinations 207

12. Probability 227

13. Geometry 247

1. Blood Relations 285

2. Coding & Decoding 297

3. Cubes and Dices 303

4. Direction Sense Test 317

5. Miscellaneous Puzzles 327

6. Logical Venn Diagram 347

7. Analytical Reasoning 353

8. Logic 379

D

E

Data Interpretation(Charts, Graphs, Tables, Data Sufficiency etc. (Class X level

Decision Making and Problem Solving

1. Graphs 387

2. Tables 393

3. Bar Diagrams 399

4. Pie-charts 409

5. Data Sufficiency 421

1. Problem Solving 443

2. Decision Making 465

Section

Section