The authors feel delighted to bring out the Thirty Sixth thoroughly revised edition of ‘Elements of Mathematics for Class XI’. The present edition is strictly according to the “New Rationalised Syllabus” issued by C.B.S.E. and NCERT for the academic session 2026 – 27. The salient features of this edition are : 1. As per the latest question paper design, Competency Based Questions have been appended at the end of each chapter which include Multiple Choice Questions, Fill in the blanks, Very Short Answer Questions, Assertion Reason Based Questions and Case Study Based Questions. 2. Higher Order Thinking Skill (HOTS) based examples and questions have been added at the end of each chapter. 3. NCERT CORNER is given at the end of each chapter which contains all the solved examples and exercises of the New NCERT Text Book along with Hints and Answers. 4. All the questions of NCERT EXEMPLAR PROBLEMS have been incorporated in this edition. 5. Some topics which have been deleted in the latest syllabus are given in the APPENDIX at the end for the additional knowledge of students. 6. COMPETITION CORNER has also been appended in this edition for the benefit of the students aspiring to appear for Joint Entrance Examination (JEE) after class XII.