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.

the green lord can not be with eather the green lady, red lady, or yellow lady so he is with blue lady.
the yellow lord can't be with the blue lady, red lady, or yellow lady so he must be with green lady.
the red lord is not with the blue lady, green lady, or red lady so he is with the yellow lady.
leaving the blue lord with red lady.

Posted by pikachu on 2004-07-10 17:45:38