Three athletes: Ahmad, Bill, and Claire are preparing to take part in high jump competition. At the time some of the spectators are discussing their chances:
Spectator X: "I think Ahmad will be first"
Spectator Y: "I am sure that Claire will not be the last"
Spectator Z: "Bill will not take first place"
After the competition it turned out that only one of the spectators was right, while the other two were wrong. Where did Claire finish?
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Suppose X is correct, and the other two are wrong. Then Ahmad was first, Claire was last, and Bill was first, which is a contradiction.
Suppose Y is correct. Then Ahmad was not first, Claire was not last, and Bill was first, which is totally possible (B-C-A). Hence Claire finished second.
Ow, thank you. so the answer is second place.. okay ^^