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All Wrong at the Olympic Games (Posted on 2007-06-15) Difficulty: 3 of 5
In the marathon, all the competing countries were from Africa, but not the usual runners, and maybe that caused all prognostics on the race results to be wrong:

1) Algeria will not win the gold, nor Botswana the silver.
2) Chad will win a medal, and Djibouti will not.
3) Djibouti and Egypt will both win medals.
4) Djibouti will not win the silver, nor Egypt the bronze.
5) Algeria will win a medal, and Chad will not.

Who won which of the medals?

See The Solution Submitted by Federico Kereki    
Rating: 4.2500 (4 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution A worked out solution | Comment 5 of 14 |
(In reply to Solution by Penny)

If Djibouti doesn't get a medal, then Chad doesn't either (so (2) is false) and Algeria also doesn't (so (5) is false), but that leaves only two medal winners, so Djibouti must get a medal.

The rest is immediate:

  • Because of (3), Egypt doesn't get a medal.
  • Because of (4), Djibouti gets Silver.
  • Because of (1), Algeria gets Gold.
  • Because of (5), Chad must get a medal, so Chad gets Bronze.




Edited on June 15, 2007, 9:36 pm
  Posted by Old Original Oskar! on 2007-06-15 21:34:46

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