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[Problem Solving]
试题详情
题目：
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? (Note, for example, that the sequence A, B, C is different from the sequence C, B, A.)
选项:
A、20
B、92
C、300
D、372
E、476
答案:
C
提问：
这题题目没看太懂。。
解答：
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阅读1018
提问：
这题题目没看太懂。。
解答：
点赞0
阅读1019
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