perplexus.info :: Logic : Lords and Ladies

Lords and Ladies (Posted on 2004-04-25)

Four pairs of lords and ladies all went to a royal ball. Each lord was wearing one color (yellow, red, blue, or green) and each lady was also wearing one of these colors. No couple was wearing the same color, so it was hard to tell who was married to who.

Using the clues, can you determine which lord is with which lady?

1. The Green Lord is with the Red Lady, if and only if the Yellow Lord is with the Blue Lady.

2. The Yellow Lord is with the Red Lady if and only if the Green Lord is with the Yellow Lady

3. The Red Lord is with the Blue Lady, if and only if the Green Lord is with the Red Lady.

Submitted by Captain Paradox

Rating: 2.6923 (13 votes)

Solution: (Hide)

For the Green Lord to be with the Red Lady, both the Yellow Lord and the Red Lord must be with the Blue Lady. Therefore, the Green Lord isn't with the Red Lady, and the Blue lady isn't with the Yellow or Red Lord. The Blue Lady must be with the Green Lord. So, if the Green Lord isn't with the Yellow Lady (he's with the Blue Lady) then the Yellow Lord isn't with the Red Lady; he's with the Green Lady. By process of elimination, the answers are revealed:
The Yellow Lord is with the Green Lady, the Red Lord with the Yellow Lady, the Blue Lord with the Red Lady, and the Green Lord with the Blue Lady.

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

Subject	Author	Date
puzzle solution	K Sengupta	2007-04-15 15:37:50
Must be right	Kim	2006-12-22 04:04:28
yup, it's not left [right i mean]	sragen	2004-11-30 07:08:12
solution	Detti	2004-10-10 21:01:31
Full Solution.	dhruv	2004-08-22 13:21:39
My solution : Lords and Ladies	kelly	2004-07-29 20:18:47
Correct solution	naiem	2004-07-28 06:21:24
Solution attempt	Sam Haylor	2004-07-20 18:57:19
possible solution	mari	2004-07-19 23:20:00
the solution	pikachu	2004-07-10 17:45:38
re(2): A far easier solution	drew	2004-06-18 20:30:19
re: solution	drew	2004-06-18 20:28:45
Simple attack to this nice problem....	mrcqm	2004-06-14 23:53:22
My first try	Lori	2004-06-11 13:03:58
Possible Solution	Deb Gross	2004-06-01 11:27:24
No Subject	Kelly	2004-05-31 19:27:00
Well done...	Jeremy Trenary	2004-05-28 19:57:59
Solved	Peter	2004-05-25 20:39:22
No Subject	Angel	2004-05-19 14:46:17
My Solution	Grace	2004-05-12 14:53:34
just guessing	elson	2004-05-09 01:28:59
solution	cassie	2004-05-06 21:20:50
Solution	David Piccolo	2004-05-06 05:34:20
Lords and Ladies	Fred Trupiano	2004-05-04 04:02:40
re: i guess...	sanchi	2004-05-01 05:56:08
i guess...	iman	2004-05-01 01:33:32
re: A far easier solution	Federico Kereki	2004-04-27 19:28:57
re: possible solution	Alec Lanter	2004-04-27 17:57:13
possible solution	nagendra	2004-04-27 03:24:15
sloution!	lindsey stevens	2004-04-26 20:31:57
Full Solution	DJ	2004-04-26 11:36:10
Whoops you did it again	Ten	2004-04-26 04:22:54
A far easier solution	Federico Kereki	2004-04-25 18:56:53
could also be this i think.	zeine	2004-04-25 17:40:13
possible solution maybe....kinda? :s	zeine	2004-04-25 17:38:08
Possible answer?	Brittany	2004-04-25 12:08:44
Solution	Tristan	2004-04-25 12:01:33

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