In a computer network, where every router connects to every other router, each device has n – 1 number of connections. There are a total of n (n – 1) / 2 number of connections. This is because each connection goes both ways where the connection A – B is the same connection B – A. Dividing by 2 removes duplicates. Utilizing the formula n (n – 1) / 2, where n = number of routers, calculate the number of connections in a network SIMILAR to the one in the diagram below; but with 11 routers.