Mathematics, 09.10.2019 01:30 erikloza12pdidtx
Twenty people get into an elevator in a hotel with seven floors, and all of them get off at some point. how many different possibilities exist for how the people could get off the elevator? (you can treat the people as indistinguishable for this problem, i. e., for example, if two people get off on the 4th floor, we don’t care which two people they are.)
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Twenty people get into an elevator in a hotel with seven floors, and all of them get off at some poi...
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