BALTIC-WAY 1994 Problem 17
- Answer
In a certain kingdom, the king has decided to build 25 new towns on 13 uninhabited islands so that on each island there will be at least one town. Direct ferry connections will be established between any pair of new towns which are on different islands. Determine the least possible number of these connections.
Dataset text NuminaMath olympiads. Quoted with source.
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