👉 Foiling is a technique used in combinatorics and algebra to quickly identify the number of ways to express a given set of objects as a product of two or more sets. It is often applied in solving problems involving permutations, combinations, and binomial coefficients. The process involves systematically choosing elements from a larger group (usually a set) one by one until no more can be chosen. This approach helps in quickly identifying the number of ways to express each element as a product of two or more elements
