This is a set of 2 books — Mathematics for Class XI (main book) and MCQs in Mathematics for Class XI — by R.D. Sharma, published by Dhanpat Rai Publications as per the CBSE syllabus for the 2026-27 session. Both are English medium (अंग्रेज़ी माध्यम) books, written entirely in English (Roman script), with no Hindi content. R.D. Sharma is one of the most widely used names for CBSE senior secondary mathematics. The main book covers the complete Class 11 course — sets, relations and functions, trigonometric functions, complex numbers and quadratic equations, linear inequalities, permutations and combinations, binomial theorem, sequences and series, straight lines, conic sections, three-dimensional geometry, limits and derivatives, statistics and probability — with detailed theory, illustrative solved examples and graded exercises with answers. The MCQ book gives chapterwise objective practice for the multiple choice portion of the paper. Key Features: Set of 2 books — Mathematics main book and MCQs in Mathematics English medium books — complete content written in English (Roman script), no Hindi content By R.D. Sharma, published by Dhanpat Rai Publications As per the CBSE syllabus for Class 11 (Class XI) Mathematics, 2026-27 session Covers sets, relations and functions, and trigonometric functions Covers complex numbers, quadratic equations and linear inequalities Covers permutations and combinations, and binomial theorem Covers sequences and series Covers straight lines, conic sections and three-dimensional geometry Covers limits and derivatives Covers statistics and probability Detailed theory with a large number of illustrative solved examples Graded exercises with answers in every chapter Separate MCQ book with chapterwise objective practice Suitable for CBSE Class 11 school exam preparation and as a base for competitive exams 'Mathematics for Class XI' (मुख्य पुस्तक) एवं 'MCQs in Mathematics' (2 पुस्तकों का सेट) आर.डी. शर्मा द्वारा लिखी गई हैं और Dhanpat Rai Publications द्वारा प्रकाशित हैं। ये पुस्तकें सत्र 2026-27 हेतु CBSE कक्षा 11 (Class XI) के गणित (Mathematics) विषय के लिए CBSE पाठ्यक्रम के अनुसार तैयार की गई हैं। इनमें समुच्चय, संबंध एवं फलन, त्रिकोणमितीय फलन, सम्मिश्र संख्याएँ एवं द्विघात समीकरण, रैखिक असमिकाएँ, क्रमचय एवं संचय, द्विपद प्रमेय, अनुक्रम एवं श्रेणी, सरल रेखाएँ, शंकु परिच्छेद, त्रिविमीय ज्यामिति, सीमा एवं अवकलज, सांख्यिकी तथा प्रायिकता को कवर किया गया है, साथ ही हल किए गए उदाहरण, उत्तर सहित अभ्यास प्रश्न एवं अध्यायवार बहुविकल्पीय प्रश्न (MCQs) भी दिए गए हैं। ध्यान दें: ये पुस्तकें पूर्णतः अंग्रेज़ी भाषा एवं रोमन लिपि में हैं, हिन्दी में नहीं।