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Set problems (Posted on 2004-05-12) Difficulty: 3 of 5
In a version of the game of set, cards with shapes on them are dealt out and each has four characteristics:

Type of shape (Circle, Square, or Triangle)
Color of the shape (Red, Blue, or green)
Fill type (Empty, Half filled, or Completely filled)
Number of the shape on the card (1, 2 or 3)

A "set" is defined as a three card subgroup of the cards "in play" such that for each of these four individual characteristics are either all the same, or all different. (The cards could be all different on one characteristic and be same on another.)

What is the greatest number of different cards that can be "in play" such that there is no subgroup that can be designated a "set"?

No Solution Yet Submitted by Gamer    
Rating: 4.5000 (4 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Some ThoughtsTrying again...Tristan2004-10-13 02:22:09
definition of a "set"?Bruce Brantley2004-08-24 04:49:10
Solutionformatted solutionLeigh Lillico2004-08-08 19:41:32
QuestionTry ThisLeigh Lillico2004-08-07 05:10:13
Solutionre SolutionLeigh Lillico2004-07-21 01:13:58
solutionLeigh Lillico2004-07-14 02:46:23
Oops...Tristan2004-05-15 10:56:22
SolutionComplete ProofTristan2004-05-14 17:08:37
solved?Axorion2004-05-14 11:00:19
Some ThoughtsHalf a proofTristan2004-05-13 20:26:46
Some Thoughtsre(2): not sure if i understood this correctly, butTristan2004-05-12 19:49:43
re: not sure if i understood this correctly, butCharlie2004-05-12 15:15:10
Some Thoughtsnot sure if i understood this correctly, butDanny2004-05-12 13:39:34
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