Combinations and permutations

Combinations and permutations are methods to count ways of arranging or selecting items. Permutations refer to arrangements where order matters; for example, different seatings of people around a table. Combinations involve selecting items where order doesn’t matter, like choosing members for a team. Think of permutations as ordering books on a shelf, whereas combinations are like choosing ingredients for a recipe. Both help in understanding possible outcomes in scenarios involving choices and arrangements.