Table of Contents
CDS maths book PDF  Mathematics for cds by RS Aggarwal pdf download
CDS Maths Book PDF: Hi readers, in this article we will share with you the maths book for CDS candidates i.e. maths for CDS PDF. The book is very helpful for the candidates preparing for CD (Combined Defense Examination).
Book Maths for CDS Entrance Exams presents a variety of objective type questions with their solutions, and also new questions to help students understand the latest exam pattern and the latest trend of questions asked in recent exams Are included.
These additional questions and their solutions are provided at the end of each chapter.
Here, in this article we will try to provide you with the free pdf cds maths book pdf download link. Aspirants can download the book from the below available link. It is highly recommended to the students to refer to a hard copy of this book that can be bought online or offline as suitable.
 CDS Previous Year Papers pdf download  PDF Download Question Papers of 2014,15,16,17,18,19,20 , 2021
 UPSC CDS Books – Subjectwise Best Books
 CDS maths book PDF  Mathematics for cds by RS Aggarwal pdf download
 CDS Syllabus 2020 – 2021 UPSC CDS Syllabus PDF Download
 CDS Exam Pattern 2021 , 2022
 UPSC CDS 2 recruitment 2020Download Syllabus for CDS 2 Recruitment 2021
Key features of cds maths book pdf
 It contains fully solved examples with detailed explanations.
 Plenty of questions for practice with solutions.
 There are references of questions asked in various Competitive Examinations, on memory basis.
About mathematics for cds book pdf
Mathematics for cds by RS Aggarwal pdf download Buy Now
Contents of cds mathematics pdf
ARITHMETIC
 Numbers
 H.C.F and L.C.M of numbers
 Decimal Fractions
 Square roots
 Percentage
 Average
 Ratio and Proportion
 Partnership
 Profits and loss
 Unitary method
 Time and work
 Time and distances
 Problems on ages
 Simple Interest
 Compound Interest
 Logarithms
MENSURATION
 Area
 Volume and surface area
ALGEBRA
 Basic operations and factorizations
 H.C.F and L.C.M of polynomials
 Linear equations
 Quadratic equations
 Rational expressions
 Surds and indices
 Set theory
Trigonometry
 Simple trigonometric identities
 Use of trigonometric tables
 Simple cases of heights and distances

Geometry
 Lines and angles
 Plane and plane figures
 Properties of angles at a point
 Sides and angles of a triangle
 Congruence of triangles
 Similar triangles
 Concurrence of medians and altitudes
 Properties of angles
 Sides and diagonals of a parallelogram
 Rectangle and square
 Circles and its properties including tangents and normal and Loci
COORDINATE GEOMETRY
 Coordinate geometry
STATISTICS
 Statistical data
 Data interpretations
 Additional Questions with Answers
CDS 2021 Mathematics Preparation Highlights
Highlight
 CDS is a one day exam. As the CDS exam along with English and General Knowledge paper , The Mathematics paper will be scheduled on the same day .
 There are 100 questions in this paper.
 The duration of this paper is 2 hours.
 The marking scheme of each question of CDS exam is 1 mark for each correct attempt and 0.33 for each wrong attempt.
 There will be no deduction in of marks CDS exam for unattempted questions.
Check Here:CDS 2021 Selection Process
CDS Mathematics PDF Book Detail Syllabus 2021
As announced by UPSC, the syllabus of CDS Elementary Mathematics consists of 7 sections namely Number System, Elementary Number Theory, Algebra, Trigonometry, Geometry, Mensuration and Statistics.
Number System
Natural numbers  Integers  Rational and Real Number 
Additions  Subtractions  Multiplications 
Square Roots  Decimal fractions  Unitary method 
Time and Work  Percentages  Applications to simple and compound Interest 
Ratio and Proportion  Variations  Profit and Loss 
Time and distance  Division  Fundamental Operations 
Elementary Number Theory
Division algorithm  Prime and composite numbers 
Tests of divisibility by 2, 3, 4, 5, 9 and 11  Multiples and factors 
Factorization Theorem  H.C.F. and L.C.M. 
Euclidean algorithm  Logarithms to base 10 
Laws of logarithms  Use of logarithmic tables 
Algebra
Basic Operations  Simultaneous linear equations in two unknowns—analytical and graphical solutions 
Simple Factors  Simultaneous linear inequalities in two variables and their solutions 
Remainder Theorem  Practical problems leading to two simultaneous linear equations or inequalities in two variables or quadratic equations in one 
Theory of Polynomials  Set Language and set notation 
HCF & LCM  Relation between its roots and coefficients (Only real roots will be considered) 
Solutions of quadratic equations  Variable & their solutions 
Law of Indices  Rational Expressions and Conditional Identities 
Mensuration
Areas of squares  Rectangles 
Parallelograms  Triangle and Circle 
Areas of figures which can be split up into smaller figures  Surface area and volume of cuboids 
Lateral Surface, Area and volume of spheres  Volume of Right Circular Cones, cylinders and Surface 

Statistics:
 Collection and Tabulation of Statistical Data
 Histograms
 Measures of Central Tendency
 Graphical Representation Frequency Polygons
 Bar charts
Check Here: CDS 201 Eligibility Criteria in detail
CDS 2021 Expected Number of Questions
Topics  Level of difficulty  Number of Questions 

Number System  Easy  20 
Mensuration  Moderate  13 – 15 
Geometry  Moderate to Difficult  11 – 15 
Time, Speed and Distance  Moderate  6 
Simple Interest/ Compound interest  Easy  2 – 5 
Trigonometry  Moderate  12 
Algebra  Moderate to Difficult  7 – 10 
Percentage  EasyModerate  2 – 4 
Mixture  Moderate  1 
Time and Work  Moderate  5 
Ratio and Proportion  Moderate  2 
Profit and Loss  Moderate  1 
DI and DS  Moderate  3 
Statistics  Easy  8 
To know other sections, Check CDS 2021 syllabus and Exam Pattern
How to Prepare for CDS 2021 Mathematics By CDS Mathematics pdf
How to Prepare
In order to crack CDS, candidates must aim to score at least 65 marks in Elementary Mathematics paper.
Number system
Any candidate preparing for CDS 2021 from this section they can easily expect 15 to 20 questions . It can be said that almost this section constitutes about 15% of this paper. So candidates need to pay attention to every concept and method. Some easy tips to solve and prepare for number system:
Candidates can use NCERT books up to class 10th to clear the concept of Number System and it will help in completing the syllabus of CDS Number System as well.
 Solve at least 50 questions per day on this topic ranging from easy to high level of difficulty.
 The candidates need to focus on the questions related to HCF and LCM, finding out the product of the unit’s location and numbers.
Expected Number of Questions:
Basics of Number System: 5 Questions
LCM & HCF : 3 Qs
Serd & Index : 2 Qs
BODMAS : 3 Qs
Factor: 4 Qs
elementary number theory
The things you should learn are Sum of natural numbers, Sum of squares, Sum of cubes, Divisibility tests and HCF and LCM along with some important formulas.
Algebra
17 – 20 questions out of 100 questions come from algebra. Basic operations, simple factors and remainder theorems are good topics to start preparing for algebra. Some tips and tricks to solve algebra problems faster:
Firstly, you should opt for easier methods, especially when you are practicing at home.
Sometimes in case of a lot of questions, taking variables can help as well as it can provide you a shortcut way to solve the problem in less time than it usually takes.
You must memorize all the important algebra formulas. At the very least you need to remember the logic behind the formulas so that when needed you can use logic instead of wasting time during the exam.
To master this topic, practice several different familiar types of questions. Once you start solving similar topics and previous years questions, it will give a rough idea of your progress and the logic behind the problems.
Check out CDS 2021 Preparation Tips
Trigonometry
Around 1015 questions were asked from Trigonometry section in CDS Mathematics paper. Thus, the weightage of trigonometry in UPSC CDS exam is around 1215%.
Some basic tips that you can follow while preparing for Mathematics:
Although trigonometric ratios are more important, you should also know trigonometric identities.
In the questions of height and distance, you should keep in mind the form of angle (angle of elevation or angle of depression) given in the particular question.
Practice languagebased questions that will help you with altitude and distance problems.
Geometry
Geometry is one of the most important sections of mathematics. CDS Mathematics paper consists of 15 – 20 questions from Geometry section. The geometry section can be divided into three subsections such as coordinate geometry; properties of lines and angles; and properties of triangles, circles, rectangles, squares etc.
Some of the topics practiced in parallel with coordinate geometry are circles, parallel lines, and triangles, with great emphasis on the congruence and similarity of triangles.
Write down the geometry formulas on a piece of paper and stick them on the wall where you can see them regularly. This will help you remember them.
Don’t waste your time trying to solve it right away, If you are stuck with a geometry question,. Instead, move on with the others and come back to that question when you’re done with the rest.
Mensuration
Mensuration actually deals with problems related to measurement involving columns, areas, lengths etc. From this topic, 13 to 15 questions are expected in CDS II 2021 exam.
 Clear your concepts about 2D and 3D dimensions and their related shapes.
 Most measurements are in decimal or require complex calculations. Due to haste, one can easily miscalculate them or make silly mistakes.
 Questions that involve calculating the cost of fences, floors, painting, etc. usually require a percentage increase or decrease in the measurement meter mentioned in the question or a figure inscribed within another figure, etc.
 Always remember the most important and essential formula. Most of the time, formulas can shorten the calculation or sometimes even simplify the problem.
View Complete UPSC CDS 2021 Exam Dates
Statistics
In CDS II 2021, maximum 8 questions can be expected from Statistics. It is quite easy if you have a clear concept. Statistics can be divided into three parts: General Statistics Terms, Frequency Distributions and Data Interpretations.
In General Statistics Terms, candidates should prepare for mean, median, mode, variance and standard deviation.
In case of frequency distribution, candidates basically need to understand some important components like class, class limit, class frequency and mean of frequency distribution etc.
Data representation refers to the given set of data in various forms such as pie chart, tabular form, bar chart, etc. There is no fixed formula for data representation. These types of questions basically require calculation of average, percentage, ratio and other types of data given.
Math for CDS book PDF
We are sorry that we are not able to provide PDF download link of this book due to copyright material and infringement. Visitors can easily buy this book from the above link.
Friends, if you need any ebook PDF related to any subject or subject and need any help and inquiry related to the exam, then you can comment below. We will reply you as soon as possible.
Disclaimer: Books owned by Sarkari Results ERA are neither PDF, created nor scanned. We only provide links already available in internet and google drive. If in any way it violates the law or has any problem please request to remove the link by mailing us at sarkariresultsera.gmail.com.
Comment for any feedback and questions.
Thank you
See Also:
UPSSSC PET Question Paper in Hindi  English 2021
Haryana Police Constable Recruitment 2021 (520 Posts) HSSC Apply Online
Rajasthan Police Constable Recruitment 2021 RJ Police Online Application
Dear Students, We are sharing Study Material PDF of Mathematics, GK and English Subjects for UPSC(Union Public Service Commission) CDS(Combined Defence Services) Exam. These Notes/Books are very useful for this examination.
GK Notes PDF for CDS in English:
Click Here to Download Complete GK Study Notes(History, Grography, Indian Polity, Indian Economy, Banking System in India, Physics, Chemistry and Biology) PDF for CDS Exam
Maths Notes PDF for CDS in English:
Click Here for Mathematics for CDS By R S Aggarwal PDF Free Download
Click Here to Download More Maths Book for CDS Exam
Click Here to Download English Vocab Study Notes PDF for CDS Exam
GK Notes PDF for CDS in Hindi:
Click Here to Download Geography Notes PDF in Hindi for CDS Exam
Click Here to Download Polity Notes PDF in Hindi for CDS Exam
Click Here to Download History Notes PDF in Hindi for CDS Exam
Click Here to Download Science Notes PDF in Hindi for CDS Exam