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Solve probability word problems involving combinations

When you combine ingredients to make a cake, order does not matter. All of the stuff you put into the cake gets mixed up anyway. In the same way, computing the number of combinations from a set does not count the outcomes where members of the set are in a different order from another combination already counted. Contrast this with permutations, where a different order of the same set of objects is counted as a separate outcome.

The problems in this worksheet ask to find the combinations that can be extracted from a larger set.