Combination Lecture 02 | SN Dey MCQ 1 to 15 Solution | Class 11

Welcome to Independent Math! In this video, we dive into Lecture 02 of Combinations (সমবায়). We provide detailed, step-by-step solutions for the Class 11 SN Dey Mathematics textbook, covering Multiple Choice Questions (MCQ) 1 through 15. ​Whether you are revising for your WBCHSE Class 11 board exams, preparing for JEE, or just building your fundamental concepts in Permutations and Combinations, this Bengali math tutorial covers all the shortcuts and mathematical identities you need to know. ​📌 What you will learn in this video: • Combinatorial identities and formulas. • The relationship between Permutations (nPr) and Combinations (nCr). • Restricted combinations (when items are always included or excluded). • Solving geometry-based combination problems (finding the number of triangles and polygon diagonals). ​⏱️ Video Chapters / Timestamps: 00:00 - Introduction to Combination MCQs 00:01:03 - MCQ 1 Solution: Proving Combinatorial Identities 00:02:57 - MCQ 2 Solution: nPr and nCr relationship 00:04:18 - MCQ 3 Solution: Evaluating constant k 00:06:38 - MCQ 4 Solution: nCp = nCq Property 00:10:03 - MCQ 6 & 7 Solutions: Restricted Combinations 00:13:30 - MCQ 10 Solution: Finding the value of r 00:16:47 - MCQ 11 Solution: Combinations in Arithmetic Progression (AP) 00:25:00 - MCQ 12 Solution: Forming Triangles from points on a circle 00:28:37 - MCQ 13 to 15 Solutions: Diagonals of an n-sided polygon ​📝 Don't forget to practice before watching! Pause the video, try to solve the MCQs on your own, and then check the solutions. ​👍 If you found this class helpful: Make sure to LIKE the video, SHARE it with your classmates, and SUBSCRIBE to Independent Math for more SN Dey Class 11 math solutions! Let me know in the comments if you have any questions or doubts. ​Tags/Keywords: #SNDeyMathClass11 #CombinationClass11 #WBCHSEMath #IndependentMath #Class11MathBengali #PermutationsAndCombinations #SNDeySolutions #Class11Maths #BengaliMathTutorial #WBCHSE