TimeSpaceLightForce Posted July 4, 2013 Report Share Posted July 4, 2013 How many questions that can be answered by True or False (w/o mentioning any of the letters) will it take to determine the secret letter inside Da Vinci's letter box? Q W E R T Y U I O P A S D F G H J K L Z X C V B N M Quote Link to comment Share on other sites More sharing options...
0 vistaptb Posted July 4, 2013 Report Share Posted July 4, 2013 Five. Each question can cut the number of possible candidates in half. Quote Link to comment Share on other sites More sharing options...
0 TimeSpaceLightForce Posted July 6, 2013 Author Report Share Posted July 6, 2013 Five. Each question can cut the number of possible candidates in half. That is the idea but with what question will half them .. 1. Is the secret letter belong to half of them? True! 2. Is the secret letter belong to half of the half it belongs to? False...6 & 7 conflict .. 4. Does it belong to half of the half of that half of that half ? True 2/4 5. Does it belong to 1 of the two? False .. the secret letter is the remaining letter that remains unknown. Quote Link to comment Share on other sites More sharing options...
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TimeSpaceLightForce
How many questions that can be answered by True or False (w/o mentioning any of the letters)
will it take to determine the secret letter inside Da Vinci's letter box?
Q W E R T Y U I O P A S D F G H J K L Z X C V B N M
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