Combined Defense Service Exam ( CDSE )

The "Combined Defence Services" Examination (CDS) is conducted twice a year by the Union Public Service Commission for recruitment into the Indian Military Academy, officers Training Academy, Indian Naval Academy and Indian Air Force Academy. The Notification for the examination is usually released in the months of October and June, and the examinations are conducted in February and November respectively. Only unmarried graduates are eligible to sit for the exam. Successful candidates are admitted into the respective Academies after an interview conducted by the Services Selection Board (SSB).

CDSE 2021 Exam Syllabus

Candidates are advised to go through the CDS 2019 Exam syllabus mentioned below very carefully so that they can avoid preparing for unnecessary topics.

There are three subjects - English, Mathematics and General Knowledge in CDS written exam. The syllabi are mentioned here:

Subjects	Syllabus
ENGLISH	The question paper will be designed to test the candidates’ understanding of English and workmanlike use of words.
GENERAL KNOWLEDGE	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 nature which candidate should be able to answer without special study.
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 MATHEMATICS - ARITHMETIC	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, simple factors, Remainder Theorem, H.C.F., L.C.M., Theory of polynomials, solutions of quadratic equations, the relation between its roots and coefficients (Only real roots to be considered). Simultaneous linear equations in two unknowns—analytical and graphical solutions. Simultaneous linear inequations in two variables and their solutions. Practical problems leading to two simultaneous linear equations or inequations 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 ×, cosine ×, Tangent × when 0° < × < 90° Values of sin ×, cos ×, and tan ×, for × = 0°, 30°, 45°, 60°, and 90° Simple trigonometric identities. Use of trigonometric tables. Simple cases of heights and distances.
GEOMETRY	Lines and angles, Plane and plane figures, Theorems on (i) Properties of angles at a point, (ii) Parallel lines, (iii) Sides and angles of a triangle, (iv) Congruency of triangles, (v) Similar triangles, (vi) Concurrence of medians and altitudes, (vii) Properties of angles, sides and diagonals of a parallelogram, rectangle and square, (viii) Circles and its properties including tangents and normals, (ix) Loci.
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.