Question: An electrical engineer designs a smart lighting system with 6 nodes, each connected to 3 others. What is the number of ways to select 2 nodes that share a direct connection? - Treasure Valley Movers

Smart Lighting Networks: A Hidden Math Behind Connected Homes
Smart lighting systems are becoming a cornerstone of modern home automation, blending convenience, energy efficiency, and connectivity. In the US market, a growing number of homeowners are curious about how these networks operate—especially when designed with precise node connectivity. The question often arises: An electrical engineer designs a smart lighting system with 6 nodes, each connected to 3 others. What is the number of ways to select 2 nodes that share a direct connection? At first glance, it’s a technical puzzle, but it reveals more than just wiring diagrams—it reflects how real-world networks are structured and counted. With 6 nodes, each linked to 3 others, understanding connections supports better system planning, troubleshooting, and scalability. For curious users exploring smart home tech, this numeric