. Four universities—1, 2, 3, and 4—are participating in a holiday basketball tournament. In the first
round, 1 will play 2 and 3 will play 4. Then the two winners will play for the championship, and
the two losers will also play. One possible outcome can be denoted by 1324: 1 beats 2 and 3 beats
4 in first-round games, and then 1 beats 3 and 2 beats 4.
(a) List all outcomes in S.
(b) Let A denote the event that 1 wins the tournament. List outcomes in A.
(c) Let B denote the event that 2 gets into the championship game. List outcomes in B.
(d) What are the outcomes in A [ B and in A \ B? What are the outcomes in A0?
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