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 Arranging numbers in a row (Posted on 2008-11-20)
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.

 Submitted by pcbouhid Rating: 2.3333 (3 votes) Solution: (Hide) See Charlieīs solution: here.See Gamerīs analysis: here.

Comments: ( You must be logged in to post comments.)
 Subject Author Date Answer K Sengupta 2009-01-07 12:03:03 re: With numbers all in a row (non-computer solution) pcbouhid 2008-11-22 07:22:48 With numbers all in a row (non-computer solution) Gamer 2008-11-22 04:22:39 re(2): Re Charlie's / reply ed bottemiller 2008-11-21 11:31:33 re(3): computer solution ---- can you check, please? pcbouhid 2008-11-21 08:04:59 re(2): computer solution ---- can you check, please? Charlie 2008-11-21 00:56:17 re: Re Charlie's Charlie 2008-11-21 00:53:11 re: computer solution ---- can you check, please? pcbouhid 2008-11-20 21:30:12 Re Charlie's ed bottemiller 2008-11-20 18:10:48 Fibonacci plus ed bottemiller 2008-11-20 17:58:29 computer solution Charlie 2008-11-20 17:21:55 1st trial Ady TZIDON 2008-11-20 11:38:46
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