Assessment

1. Which of the following propositions is tautology?
(a) (p v q)→q
(b) p v (q→p)
(c) p v (p→q)
(d) Both (b) & (c)

2. Which of the proposition is p^ (~ p v q) is
(a) A tautology
(b) A contradiction
(c) Logically equivalent to p ^ q
(d) All of above

3. Which of the following is/are tautology?
(a) a v b → b ^ c
(b) a ^ b → b v c
(c) a v b → (b → c)
(d) None of these

4. Logical expression ( A^ B) → ( C’ ^ A) → ( A ≡ 1) is
(a) Contradiction
(b) Valid
(c) Well-formed formula
(d) None of these

5. Identify the valid conclusion from the premises Pv Q, Q → R, P → M, ˥M
(a) P.... View More