Math Problem Statement
Đếm số các hoán vị (a1, a2, . . . , an) của tập {1, 2, . . . , n} sao cho ai − ai+1 chia hết cho i và tìm tất cả các hoán vị này.
Solution
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Math Problem Analysis
Mathematical Concepts
Permutations
Modular Arithmetic
Formulas
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Theorems
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Suitable Grade Level
Advanced Mathematics
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