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

32.3.4 Telling Permutations and Combinations Apart

32.3 Combinations: Only Who Was Chosen, Not the Order

Point 4 of 6

32.3.4 Telling Permutations and Combinations Apart

Core idea

Just ask 'if I shuffle the order, is it still the same selection?' — if yes it's a combination, if no it's a permutation

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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