107 football teams compete in the annual cup shield.
[Ref: ZBNP] © Kevin Stone
At the start of each round, the teams are selected in pairs, these pairs then compete against each other to determine who goes through to the next round.
Any spare teams automatically go through to the next round.
How many games must be played to determine the winner?
We started with 107 teams, since we can only have 1 winner the other 106 teams must lose. Therefore we need 106 games.
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