perplexus.info :: General : Domino arrangements

Domino arrangements (Posted on 2006-05-27)

Take the 15 smallest dominoes in a set (double blank through double four.)

In how many ways can they be arranged in a row such that the numbers on consecutive pieces match.

Count the two directions separately.

Submitted by Jer

Rating: 3.6667 (3 votes)

Solution: (Hide)

126720 is the solution give in the comments. The arguments made there make sense so I won't try to repeat them here.

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

Subject	Author	Date
No Subject	K Sengupta	2024-02-20 07:02:16
And I agree with Charlie	Steve Herman	2006-05-29 13:12:51
Fully computerized solution	Charlie	2006-05-28 14:19:59
re: Pencil and paper solution	Charlie	2006-05-28 11:45:15
Pencil and paper solution	Steve Herman	2006-05-28 09:30:19
I agree with Josh	Steve Herman	2006-05-28 08:45:32
No Subject	Josh	2006-05-28 08:30:54
A Beginning	brianjn	2006-05-27 21:30:16

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