Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Repeated and Circular Permutations
Rearrange items by hand to compare permutations with repetition, circular permutations, and permutations with repeated letters, and see how the counting rule changes.
by Anonymous
Counting and Permutations
Fill the spots one by one, multiplying the choices that remain, and count the leaves of the tree diagram to confirm the multiplication rule and n!.
by Anonymous