perplexus.info :: Numbers : Sequencing problems

Sequencing problems (Posted on 2004-10-01)

Consider a sequence of integers in arithmetical progression: A, A+B, A+2B, A+3B, ... A+NB.

Systematically pick any two adjacent numbers, and randomly replace them by their sum or difference. Keep at this until only one number remains. Is this number odd or even? What's the largest value this number can attain?

See The Solution Submitted by Federico Kereki

Rating: 3.1667 (6 votes)

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Law Assignment Help	andrew martin	2023-09-14 03:56:26
Puzzle Answer	K Sengupta	2023-09-13 21:40:37
re: Answer	keisha	2004-10-01 14:05:45
re(2): solution	keisha	2004-10-01 14:03:04
No Subject	keisha	2004-10-01 14:01:20
re(2): solution	Charlie	2004-10-01 12:23:20
re: solution	nikki	2004-10-01 11:45:22
Largest Value solution (partial spoilers)	nikki	2004-10-01 11:37:33
Answer	Old Original Oskar!	2004-10-01 11:17:41
solution	Charlie	2004-10-01 09:22:17

Please log in:

Login:
Password:
Remember me:

Sign up! \| Forgot password

Search:

Search body:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info