Stage 32 · Counting, Permutations, Combinations & the Binomial Theorem
32.3.2 The Combination Formula C(n,m)
32.3 Combinations: Only Who Was Chosen, Not the Order
Point 2 of 6
32.3.2 The Combination Formula C(n,m)
Core ideaA combination is just a permutation with the internal line-up repeats removed, so divide A(n,m) by m! and you get C(n,m)
Module goal. Tell combinations apart from permutations, master the combination formula and its two key properties, and solve combinations with restrictions plus simple distribution problems