Use truth tables to determine which of these conditional statements are tautologies.

2. Which of these statements are true?

7) Use truth tables to determine which of these conditional statements are tautologies. I. $? (p ? r) ? [? (p ? q) ? ? (q ? r)]$ II. $[p ? (p ? q)] ? q$ III. $? q ? [p ? (? p ? ? q)]$ 8) Which of these statements are true? I. $? (p ? q) ? p ? q$ II. $p ? q ? ? q ? p$ III. $? p ? (q ? ? r) ? q ? (p ? ? r)$

Question

Use truth tables to determine which of these conditional statements are tautologies.

2. Which of these statements are true?

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7) Use truth tables to determine which of these conditional statements are tautologies. I.

? (p ? r) ? [? (p ? q) ? ? (q ? r)]

II.

[p ? (p ? q)] ? q

III.

? q ? [p ? (? p ? ? q)]

8) Which of these statements are true? I.

? (p ? q) ? p ? q

II.

p ? q ? ? q ? p

III.

? p ? (q ? ? r) ? q ? (p ? ? r)

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