Permutation and Combination

This topic covers concepts, such as Permutations and Combinations, Fundamental Principles of Counting (FPC), Addition Principle & Multiplication Principle etc.

This topic covers concepts, such as Factorial, Exponent of Prime Number p in n Factorial, Permutation, Permutation of Distinct Objects, Permutation of n Distinct Objects Taken All at a Time & Permutation when Repetition of Objects is Allowed etc.

This topic covers concepts, such as Circular Permutation, Circular Permutation of 'n' Distinct Objects Taken All & Circular Permutation of 'n' Distinct Objects Taken 'r' at a Time etc.

This topic covers concepts, such as Combination, Difference between Permutation and Combination, Selection of 'r' Objects out of 'n' Distinct Objects, Understanding of nCr and its Existence & Combinatorics Problems on Polygon etc.

This topic covers concepts, such as Inclusion - Exclusion Principle in Combinatorics & Arrangement and Derangement in Permutation etc.

This topic covers concepts, such as Divisors of an Integer, Distribution of 'n' Identical Objects among 'r' Non-distinguishable Groups, Distribution of 'N' Identical Objects among 'R' Distinguishable Groups & Integral Solutions of an Equation etc.