Stage 32 · Counting, Permutations, Combinations & the Binomial Theorem

32.3.6 Grouping and Distribution Problems

32.3 Combinations: Only Who Was Chosen, Not the Order

Point 6 of 6

32.3.6 Grouping and Distribution Problems

Core idea

Split people into piles and then hand out tasks: when the piles are equal in size, divide by the factorial of the number of piles so identical piles aren't counted twice

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
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