Performs the following calculations for 0 ≤ k ≤ n < 100:

1. Combinations: C(n) C(nk)
2. Permutations: P(n) P(nk)
3. Integer Partitions: p(n) p(nk)
4. Integer Compositions: c(n) c(nk)
5. Sterling numbers: s1(nk)
6. Sterling numbers: s2(n) s2(nk)
7. Derangements: D(n) D(nk)

The app saves your calculations to a list. You can delete calculations that you no longer need.

Other features include:

1. A "Cheat Sheet" activity to help you learn definitions formulas and applications related to each of the counting numbers listed above.

2. Reference tables that list the values of each of the counting numbers upto n = 100.