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Fifteen Jumbled (Posted on 2006-12-29) Difficulty: 3 of 5
The numbers 1 through 15 have been re-ordered according to a certain logic. Deduce the logic and fill in the blanks.

15, 7, 11, 3, ___, ___, ___, 1, 14, 6, ___, ___, 12, 4, 8

  Submitted by Jer    
Rating: 3.0000 (2 votes)
Solution: (Hide)
15, 7, 11, 3, 13, 5, 9, 1, 14, 6, 10, 2, 12, 4, 8

The numbers are 15 to 1 written as four digit binary numbers and reversed.

For example the second number is 7 because if you take the binary of 14 and reverse it (0111) you get the binary of 7 (0111).

I created this problem when I saw a scrap of paper on which I written these binary numbers, but the paper was upside down.

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionPuzzle SolutionK Sengupta2008-07-02 15:47:04
AnswerK Sengupta2008-07-01 13:32:56
SolutionThe Color of Money (Spoiler!!)Eric2006-12-29 19:59:23
SolutionTwo to tango (spoiler)Gamer2006-12-29 17:55:47
Solutionsolution fifteen jumbledhardik asawa2006-12-29 15:37:48
SolutionSolution (spoiler?)Leming2006-12-29 13:53:12
Solutionsequence (but not the logic?)Joel2006-12-29 12:33:41
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