Math Problem Statement
Hỏi có bao nhiêu số có n chữ số với các chữ số nằm trong tập {1,2,3,4,5} mà 2 chữ số liên tiếp hơn kém nhau đúng 1 đơn vị
Solution
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Math Problem Analysis
Mathematical Concepts
Dynamic Programming
Recursive Algorithms
Combinatorics
Formulas
dp[i][1] = dp[i-1][2]
dp[i][2] = dp[i-1][1] + dp[i-1][3]
dp[i][3] = dp[i-1][2] + dp[i-1][4]
dp[i][4] = dp[i-1][3] + dp[i-1][5]
dp[i][5] = dp[i-1][4]
Theorems
None explicitly, but uses recursive relations and dynamic programming principles.
Suitable Grade Level
Grades 10-12
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