Mathematics, 25.10.2019 22:43, kellypechacekoyc1b3

Each participant in a certain study was assigned a sequence of 3 different letters from the set {a, b, c, d, e, f, g, h}. if no sequence was assigned to more than one participant and if 36 of the possible sequences were not assigned, what was the number of participants in the study?

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Each participant in a certain study was assigned a sequence of 3 different letters from the set {a,...