Computer Fundamentals - Section 4 Multiple Questions and Answers.




26.Which of the following is FALSE? Read ^ as And, v as OR, ~as NOT, →as one way implication and ↔ as two way implication?
A. ((x → y)^ x) →y
B. ((~x →y)^ ( ~x ^ ~y))→y
C. (x → ( x v y))
D. ((x v y) ↔( ~x v ~y))

27. Which of the following well-formed formula(s) are valid?
A. ((P → Q)^(Q → R))→ (P → R)
B. (P → Q) →(˥P → ˥Q)
C. (P v (˥P v ˥Q)) →P
D. ((P → R) v (Q → R)) → (P v Q}→R)

28.The correct prefix formula is
A. →˥,P v Q ↔˥R ˥S
B. →P˥Qv ↔ ˥R
C. →→PQ→→QR→PR
D. →˥PV ↔ QSP

29.Let p and q be propositions. Using only the truth table decide whether p ↔ q does not imply p → ˥q is
A. True
B. False
C. Both (a) and (b)
D. None of these

30.Which of the following propositions is tautology?
A. (p v q)→q
B. p v (q→p)
C. p v (p→q)
D. None of these

«



Date to Date Current Affairs 2022

PakMCQs.net

Quick Links

GAT Subject



   Computer Science    English Mcqs    Agriculture    

Engineering



   Computer Science    Civil Engineering    

Technical



   Networking    Electronics    Database    

Past Papers



   Model Papers    FPSC Papers