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• jibiki 17y ago
  Is 7 the answer to the first question?
  • male_salmon 17y ago
    Yes
  • ecksor 17y ago
    no
  • jcl 17y ago
    That appears to be the case. (http://answers.yahoo.com/question/index?qid=20070410145334AAnLNCT http://answers.yahoo.com/question/index?qid=20070410145334AA...)
  • eru 17y ago
    Depends. If you equate horses with "real numbers all different from another", than 7 is the best I can get down to. Haven't proved optimality, yet, though. (But obviously you'll need at least 5 races, so that every horse has been raced at least once.)