Yes Combined Defence Services Examination books by Jain, Kishore is very useful for this exam published by Upkar Prakashan:

Book material :

Combined Defence Services Examination (English) 1st Edition (Paperback, Jain) Price: Rs. 288
Table of Contents
Previous Years’ Solved Papers
Section-I
General English
o Common Errors
o Antonyms
o Synonyms
o Sentence Completion
o One Word Substitution
o Comprehension
o Passage Completion
o Completion of Paragraphs and Sentences
Section-II
General Knowledge
Section-III
Elementary Mathematics
o Numbers
o Square Root
o Unitary Method
o Work and Time
o Time and Distance
o Percentage
o Simple Interest
o Compound Interest
o Profit and Loss
o Ratio and Proportion
o Variation
o Partnership
o Average
o H C F and L C M
o Logarithms and Their Use
o Area
o Cuboid and Cube
o Cylinder
o Cone
o Sphere
o Factorisation and Remainder Theorem
o H C F and L C M of Polynomials
o Equations
o Roots of a Quadratic Equation
o Set Language and Notations
o Laws of Indices
o Lines and Angles
o Triangles
o Quadrilaterals
o Circle
o Loci
o Trigonometry
o Simple Identities
o Use of Trigonometric Table
o Height and Distance
o Collection and Tabulation
o Graphical Representation
o Calculation of Mean
Table of Contents
Contents
? Previous Years’ Solved Papers
Section-I
General English
1. Common Errors
2. Antonyms
3. Synonyms
4. Sentence Completion
5. One Word Substitution
6. Comprehension
7. Passage Completion
8. Completion of Paragraphs and Sentences
Section-II
General Knowledge
Section-III
Elementary Mathematics
1. Numbers
2. Square Root
3. Unitary Method
4. Work and Time
5. Time and Distance
6. Percentage
7. Simple Interest
8. Compound Interest
9. Profit and Loss
10. Ratio and Proportion
11. Variation
12. Partnership
13. Average
14. H. C. F. and L. C. M.
15. Logarithms and their Use
16. Area
17. Cuboid and Cube
18. Cylinder
19. Cone
20. Sphere
21. Factorisation and Remainder Theorem
22. H. C. F. and L. C. M. of Polynomials
23. Equations
24. Roots of a Quadratic Equation
25. Set Language and Notations
26. Laws of Indices
27. Lines and Angles
28. Triangles
29. Quadrilaterals
30. Circle
31. Loci
32. Trigonometry
33. Simple Identities
34. Use of Trigonometric Table
35. Height and Distance
36. Collection and Tabulation
37. Graphical Representation
38. Calculation of Mean


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