→ P4) A(-P5 V P4))

3. Use a truth table to determine whether the following argument is valid or invalid. p → r ..p V q → r

Need help with making a truth table for the following below and determine if it’s a tautology, a contradiction, or neither.

• Convert the following statements to symbols. • Use a truth table to show that the statement is a contradiction. 1. I am at work and I am not at work. Let: p: Let : p: Symbols: Construct a truth table.

Use a truth table to determine if the argument is valid or invalid. Justify your answer.p → q ~q ∴ ~p