The updated 4th edition of the book 17 Topic wise CDS Mathematics Previous Years Solved Papers (2007 - 2023) consists of last 17 years from 2007 Paper I – 2023 Paper II solved papers of English distributed into 25 topics. # In all there are 34 Question papers from 2007 - I to 2023 - II which have been divided into the above discussed 25 topics. # Practicing these questions, aspirants will come to know about the pattern and toughness of the questions asked in the examination. # The book contains 3900+ MILESTONE MCQ’s from the above 34 Question papers. # The strength of the book lies in the originality of its question papers and Errorless Solutions. # The solution of each and every question is provided in detail (step-by-step) so as to provide 100% concept clarity to the students.