perplexus.info :: General : ABCDEABCDE is one

ABCDEABCDE is one (Posted on 2006-05-17)

How many arrangements of the letters AABBCCDDEE are there such that there are no double letters in the sequence?

See The Solution Submitted by Jer

Rating: 4.5000 (2 votes)

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

Subject	Author	Date
No Subject	K Sengupta	2023-07-23 01:14:14
Found this in the OEIS	Brian Smith	2017-01-15 11:37:44
computer solution (spoiler) and hint for analytic solution	Charlie	2006-05-17 10:35:45
Solution (?)	Dej Mar	2006-05-17 10:06:49

Please log in:

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