Permutation & Combination · Question 17 · Easy
In a college cricket league, each of 10 teams plays every other team exactly once. How many matches are played?
- 45
- 100
- 50
- 90
Answer and explanation
Answer: A. 45
Explanation: Each match is a choice of 2 teams from 10: 10C2 = (10 × 9)/2 = 45.
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