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.

A statements is true if both sides of the statement are false.
In this problem all three statments are false <-> false

The solution is:
yelloww lord - green lady
green lord - blue lady
red lord - yellow lady
blue lord - red lady

Posted by Detti on 2004-10-10 21:01:31