What is the meaning of validity, truth, and soundness as they relate to the area of logical syllogisms

Answer 1

http://philosophy.lander.edu/logic/tvs.html

http://en.wikipedia.org/wiki/Argument

http://answers.yahoo.com/question/index?qid=20060828230243AAVG2O2

Answer 2

Thank you very much

Answer 3

You're very welcome.