Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
The Triangle Reveals Coefficients
Tap a cell in Pascal’s triangle to see the “sum of the two cells above,” count paths that move only right and down on a grid, and expand the coefficients of (a+b) powers—then see that all three give the same combinatorial numbers.
#math#pascal#binomial+2
by Anonymous⭐ 1🍴 0
Combinations by Removing Order
If only who you picked matters, there are far fewer to count. List every possible choice, divide permutations by r! to remove order, and discover the symmetry of “choosing = leaving out.”
#math#combination#counting+2
by Anonymous⭐ 1🍴 0