A glaciologist uses a drone to capture images of a glacier's surface divided into a \(3 \times 3\) grid of equal squares. Each cell must be classified as either ice (I), firn (F), or meltwater (M), with at least one cell classified as each type. How many valid configurations are possible?

A glaciologist uses a drone to capture images of a glacier's surface divided into a \(3 \times 3\) grid of equal squares. Each cell must be classified as either ice (I), firn (F), or meltwater (M), with at least one cell classified as each type. How many valid configurations are possible? - Sterling Industries

📅 April 21, 2026 👤 scraface

Apr 21, 2026

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