Math Problem Statement

"Find a recurrence relation for the number of ternary

strings of length n that contain two consecutive sym-

bols that are the same."

Solution

To

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Math Problem Analysis

Mathematical Concepts

Recurrence Relations
Combinatorics
Ternary Strings

Formulas

Recurrence relation for ternary strings with consecutive symbols

Theorems

Principle of inclusion-exclusion (if applicable)

Suitable Grade Level

Grades 11-12