Combinations by Removing Order
by Anonymous · ⭐ 1 · 🍴 0
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.”
by Anonymous · ⭐ 1 · 🍴 0
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.”