For CDS Written exam preparation, students need to prepare 3 subjects – Maths, English & GK. Those who are preparing for IMA, INA & AFA have to appear in the tests of all these three subjects but those who are targeting OTA, have to appear in only two tests i.e. English & GK.

**Standard of Questions** - The standard of the papers in Elementary Mathematics will be of Matriculation level. The standard of papers in other subjects will approximately be such as may be expected of a graduate of an Indian University.

Below, we are mentioning the complete syllabus for cds written exam.

**PAPER 1 : ENGLISH**

- Basic Grammar Topics
- Comprehension
- Synonyms
- Antonyms
- Para Jumbles
- Error Spotting

**PAPER 2 : GENERAL KNOWLEDGE**

- Current events, daily news paper headlines, chemistry, history, geography etc.
- General Knowledge including knowledge of current events and of such matters of everyday observation and experience in their scientific aspects as may be expected of an educated person who has not made a special study of any scientific subject.
- The Paper will also include questions on History of India and Geography of a nature which Candidate should be able to answer without special study.

**PAPER 3 : ELEMENTARY MATHEMATICS**

**Arithmetic**- Number System—Natural numbers, Integers, Rational and Real numbers. Fundamental operations, addition, subtraction, multiplication, division, Square roots, Decimal fractions.
- Unitary method, time and distance, time and work, percentages, applications to simple and compound interest, profit and loss, ratio and proportion, variation.
- Elementary Number Theory—Division algorithm. Prime and composite numbers. Tests of divisibility by 2, 3, 4, 5, 9 and 11. Multiples and factors.
- Factorisation Theorem. H.C.F. and L.C.M. Euclidean algorithm. Logarithms to base 10, laws of logarithms, use of logarithmic tables.

**Algebra**- Basic Operations, simple factors, Remainder Theorem, H.C.F., L.C.M. Theory of polynomials, Solutions of quadratic equations, relation between its roots and coefficients (Only real roots to be considered).
- Simultaneous linear in equations in two variables and their solutions. Practical problems leading to two simultaneous linear equations or in equations in two Variables or quadratic equations in one variable & their solutions.
- Set language and set notation, rational expressions and conditional identities, Laws of indices.

**Trigonometry**- Sine x, cosine x, Tangent x when 0 ≤x ≤90 Values of sin x, cos x and tan x, for x = 0
^{o}, 30^{o}, 45^{o}, 60^{o}and 90^{o} - Simple trigonometric identities,
- Use of trigonometric tables,
- Simple cases of heights and distances.

- Sine x, cosine x, Tangent x when 0 ≤x ≤90 Values of sin x, cos x and tan x, for x = 0
**Geometry**- Lines and angles, Plane and plane figures, Theorems on
- Properties of angles at a Point,
- Parallel lines,
- Sides and angles of a triangle,
- Congruency 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,
- Loci.

- Lines and angles, Plane and plane figures, Theorems on
**Mensuration**- Areas of squares, rectangles, parallelograms, triangle and circle. Areas of figures which Can be split up into these figures (Field Book), Surface area and volume of cuboids, lateral surface and volume of right circular cones and cylinders, surface area and Volume of spheres.

**Statistics**- Collection and tabulation of statistical data, Graphical representation, frequency Polygons, histograms, bar charts, pie charts etc. Measures of central tendency.