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Arranging numbers in a row (Posted on 2008-11-20) Difficulty: 2 of 5
How many numbers, from 1 to 50 (both included) can you arrange in a row (one of each) so that each one, except the first and the last, is the sum or difference of its two neighbours?

Example: 3, 10, 7, 17, 24, 41.

10 = 3+7, 7 = 17-10, 17 = 24-7, 24 = 41-17.

See The Solution Submitted by pcbouhid    
Rating: 2.3333 (3 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: With numbers all in a row (non-computer solution) | Comment 11 of 12 |
(In reply to With numbers all in a row (non-computer solution) by Gamer)

Nice analysis.
  Posted by pcbouhid on 2008-11-22 07:22:48

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