Question

3. (a) Outline the procedure followed in determining whether a given argument is valid or
not valid, using truth tables. [5]
(b) Use the procedure, outlined in (a) above, to determine the validity of the following
argument.
p ⇒ q ∨ ¬r
q ⇒ p ∧ r
∴ p ⇒ r

Answer 1

Step-by-step explanation:

A truth table has normally three kinds of tables, AND OR or NOT table.

In AND and OR table, we need atleast two inputs to generate an output.

In AND table, the output is true if and only if both the inputs are also true whereas in OR table, the output is false if and only if both the outputs are false.

In NOT table, it is just given the reverse of input, like if the input is false, output of NOT will be true