See also the Dr. Math FAQ: Browse High School Logic Stars
indicate particularly interesting answers or good places to
begin browsing. Selected answers to common questions: - Logic
and Conditional Sentences [10/04/2005] I am having a hard time
understanding why two false statements in a conditional sentence
makes it true. - Logic: Bayes and Popper [06/24/2003] Is p -> q
totally equivalent to ~q -> ~p in practice? - The Logic behind
Conditional Statements [11/28/2007] I understand the subset
explanation of why the conditional logic statement 'If false
then true/false' is always considered true. But what is the
logic behind it? - Logic, Groups, and Identities [02/25/1999] Is
it possible for more than one answer to exist when proving
things? What is a group? Can you give an example of an identity?
- Logic Laws [03/04/2003] I do not understand the laws of
inference, simplification, disjunctive inference, and
disjunctive addition. - Logic - Liars & Truthtellers (What
Question Does She Ask?) [3/12/1995] A logician v