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A league has 14 teams, and 3 matches are played between every pair of teams. How many matches will be played?

Answer and explanation

Correct answer: 273

First count the unordered pairs of teams using combinations, because the pair consisting of Team A and Team B is the same as the pair consisting of Team B and Team A. For 14 teams, the number of pairs is C(14,2) = 14 × 13 ÷ 2 = 91. Each pair plays 3 matches, so the total number of matches is 91 × 3 = 273. Therefore option C is correct. Option A counts only the team pairings and ignores the three matches per pair. Option B would use two matches per pairing, while option D would use four. Counting ordered pairs would also double-count each matchup, so division by 2 is essential.

Related tags

CombinationsLeague ScheduleTeam PairsPermutations And CombinationsMathematicsClass 11 Mcq

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