Solution: This is equivalent to partitioning 4 distinguishable objects into 2 non-empty indistinct subsets, calculated by the Stirling number $ S(4, 2) $. Using the recurrence: - AMAZONAWS

📅 March 11, 2026 👤 scraface

Mar 11, 2026

Solution: This is equivalent to partitioning 4 distinguishable objects into 2 non-empty indistinct subsets, calculated by the Stirling number $ S(4, 2) $. Using the recurrence: