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
Combinatorics
Dynamic Programming
State Transition
Formulas
f(i, 1) = f(i-1, 2)
f(i, 2) = f(i-1, 1) + f(i-1, 3)
f(i, 3) = f(i-1, 2) + f(i-1, 4)
f(i, 4) = f(i-1, 3) + f(i-1, 5)
f(i, 5) = f(i-1, 4)
Tổng = f(n, 1) + f(n, 2) + f(n, 3) + f(n, 4) + f(n, 5)
Theorems
State Transition Method
Suitable Grade Level
Grades 11-12
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