perplexus.info :: Numbers : Arranging numbers in a row

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 Charlie´s solution: here.

See Gamer´s 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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