0Permutation, in the context of JEE Main, refers to the different ways to arrange a set of objects in a specific order. It's a crucial concept in the "Permutations and Combinations" chapter, which is important for JEE Mains. The core idea is that order matters in permutations, unlike combinations where order is not considered.
Key Concepts and Formulas:
- Definition:Permutation is the arrangement of objects where the order of arrangement is important.
- nPr:The number of permutations of n distinct objects taken r at a time is denoted as nPr and calculated using the formula: nPr = n! / (n-r)!.
- n!:Represents the factorial of n, which is the product of all positive integers up to n (e.g., 5! = 5 * 4 * 3 * 2 * 1)
