Free Practice Question
PS · Problem Solving
655-705
Combinations
In a basketball tournament, there are 12 teams participating. Each team competes in 22 games (each team faces the same opponent 2 times). Additionally, there are 6 playoff games, culminating in the championship game. How many matches are played in total during the tournament?
Answer Choices
Correct answer marked belowA
288
B
276
C
180
138
Correct
E
120
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Explanation
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Official Explanation
Official
To find the total number of matches played in the tournament, we first calculate the number of matches played by the teams. Each of the 12 teams plays 22 matches, so the total number of matches is given by [m] \frac{12…
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What it tests
Whether you can count arrangements and selections correctly — permutations vs. combinations.
Common trap
Overcounting: treating a selection as ordered when order does not matter, or forgetting to divide by duplicates.
Details
Difficulty
655-705
Type
PS
Category