NCERT Class 11 Maths Exercise 6.4 | Combinations Explained | Step-by-Step Solutions

Описание: 📄 Download the FREE PDF notes for this lesson here
https://tinyurl.com/fk8345rd
In this video, we dive deep into Exercise 6.4 from NCERT Class 11 Mathematics (Chapter 6: Permutations & Combinations).

⏱️ Timestamps
00:00 – Introduction to Exercise 6.4 (Combinations)
00:34 – Q1: If nC8 = nC2
03:47 – Q2: Problems on ratio of combinations (2nC3 : nC3)
10:18 – Q3: Number of chords from 21 points on a circle
13:40 – Q4: Selecting 3 boys and 3 girls from 5 boys & 4 girls
17:11 – Q5: Selecting 9 balls (3 of each colour) from red, white, blue
21:37 – Q6: 5-card combinations with exactly one ace
26:47 – Q7: Cricket team of 11 with exactly 4 bowlers
31:52 – Q8: Bag problem (2 black and 3 red balls)
34:56 – Q9: Student choosing courses (with compulsory subjects)

👉 This video is perfect for Class 11 students, JEE/NEET aspirants, and anyone who wants to strengthen their foundation in Combinatorics.

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