Problem
2018 Pascal Problem 22
A Miniou circuit contains nodes and wires and obeys the following rules:
- Each wire connects two different nodes. - There is at most one wire between each pair of nodes. - Exactly three wires are connected to each node.
An example of a Miniou circuit is shown. If a Miniou circuit has 13\,788 wires, how many nodes does it have?
\textbf{(A)}\ 9190\quad \textbf{(B)}\ 9192\quad \textbf{(C)}\ 9188\quad \textbf{(D)}\ 9186\quad \textbf{(E)}\ 9184
If there are no answer choices shown, enter a numerical answer.
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