The method of proving invalidity by assigning truth values to statements in a shortened truth table:
A)can become more cumbersome than the full truth table method because of the time and energy involved
B)works only with modus tollens and modus ponens
C)is resorted to for convenience-it saves time and space
D)is not as accurate as using Venn diagrams

Question

Quizplus · Accepted Answer

The shortened truth table method is used for convenience because it saves time and space by focusing only on the necessary parts of the table to prove invalidity, rather than constructing a full truth table.

The Method of Proving Invalidity by Assigning Truth Values to Statements