Answer to Question #302740 in Programming & Computer Science for Dan

Question

Using the replacement rule method, show that the following are tautologies. Please write your conclusion at the end of each of the items.

a. ((∼p ∧ q) ∧ (q ∧ r))∧ ∼q

b. (∼p ∨ q) ∨ (p ∧ ∼q)  

**Do not remove parenthesis or change the grouping unless it is valid to do so, that

is, it does not affect the truth value of the expression.

Answer 1

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