Testing for Validity with Truth Tables

Multiple Choice: Click on the correct answer and the page will jump forward to the next problem.

1. A truth table for an argument includes

a.
truth value assignments for all atomic sentences b.
truth value assignments for premises only c.
truth value assignments for the conclusion but not the premises.
d.
truth value assignments for premises and conclusion.

2. A truth table for an argument shows that argument valid
if

a.
it shows the premises and conclusion true on some row. b.
it includes no row with premises true and conclusion false. c.
every row makes the premises true. d.
it includes no row with conclusion true and premises false.

3. A truth table for an argument shows that that argument
is valid IF it also shows the argument's conclusion is logically true.

a.
true
b.
false

4. A truth table for an argument shows that argument *in*valid
if

a.
it has at least one row making premises true and conclusion false.
b.
it has at least one row making premises false and conclusion false.
c.
it has at least one row making premises false and conclusion true.