Description
This app is designed for combinatorics enthusiasts and students, providing comprehensive functions for permutation and combination calculations. It supports various calculation modes such as without repetition permutation, without repetition combination, with repetition permutation, and with repetition combination, and it shows each calculation step in detail, helping users deeply understand the derivation of formulas. At the same time, the app supports history record management, making it convenient for users to check and review past calculations at any time, improving learning efficiency. The simple and intuitive interface allows you to easily master the mysteries of combinatorics, making it a powerful assistant for learning and work.