Permutations and Combinations Class 11 Notes for IIT JEE

eSaral Class 11 Permutations and Combinations 🚀 Checkout eSaral Courses Fundamental Principles of Counting Before permutations and combinations, two counting principles form the foundation of every problem in this chapter. Multiplication Principle (AND Rule) If task A can be done in m ways AND task B can be done in n ways, then both tasks together can be done in m n ways. Example: A person has 4 shirts and 3 trousers. Total outfits = 4 3 = 12 ways The multiplication principle applies whenever ta...