# CDS 1 2020 Exam Syllabus and Examination Pattern

## CDS 1 2020 Exam Syllabus and Examination Pattern

The "Combined Defence Services" (CDS) Examination 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/November and June/July, and the examinations are conducted in February and November respectively. CDS 1 2020 will held on 2 February 2020. 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). To clear the examination, first, you need is the complete information of the pattern, syllabus and previous year exam analysis so that it would become easy for you to analyse the examination and to prepare a strategy further.

**CDS 1 2020 EXAMINATION PATTERN**

**Marking Scheme**

Negative marking is applicable for every wrong marked answer. In CDS paper, each question carries 4 options and out of which only 1 option is correct. For each incorrect answer, 1/3 of the marks will be deducted. More than one option marked is treated as incorrect. However, if a question is left unanswered there will be no negative marking.

**CDS 1 2020 SYLLABUS**

**ENGLISH (Code No. 01)**

The question paper will be designed to test the candidates’ understanding of English and workmanlike use of words.

The topics generally asked in the examination include:

- Ordering of sentences
- Antonyms/Synonyms
- Cloze comprehension
- Fill in the blanks (single fillers)
- Sentence rearrangement
- Spotting errors
- Reading comprehension

**GENERAL KNOWLEDGE (Code No. 02)**

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.

**ELEMENTARY MATHEMATICS (Code No. 03)**

**ARITHMETIC**

Number System—Natural numbers, Integers, Rational and Real numbers. Fundamental operations, addition, substraction, 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 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**

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 repres

entation frequency polygons, histograms, bar charts, pie charts etc. Measures of central tendency.

entation frequency polygons, histograms, bar charts, pie charts etc. Measures of central tendency.

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