what are the values?

Question

If p is True, q is False, and r is True, determine the truth values of the statements:
A) (p^q)v (p^~r)
B) (~pvq) ^ ~p
C) (pv~q)-arrow r

Answer 1

keep checking more links please,
http://mathworld.wolfram.com/ModusTollens.html
http://www.philosophypages.com/lg/e10b.htm
http://socialscience.cypresscollege.edu/~philosophy/critical_thinking/critical_thinking/soundness.htm

Answer 2

A) False.
B) False (it is enough that ~p is False)
C) True (it is enough that r is True)

In the mood for some stronger flavors?
http://plato.stanford.edu/entries/logic-connexive/

And, generally speaking, the Stanford Encyclopedia of Philosophy: http://plato.stanford.edu/contents.html
Absolutely top-class, and almost parapsychologically free.