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Disjunction
Any two propositions P or Q
P and Q is true if and only if either P
or Q are true. It is false only if both P and Q
are false.
The truth table for
If you have Java, try it out for yourself:
Set the truth values for the propositions
For Educators Stephen Downes Guide to the Logical Fallacies Copyright © Stephen Downes, 1995-2001 stephen.downes@ualberta.ca |