0 votes 0 votes Which of the following propositions is a tautology ? $(p \vee q) \to p$ $p \vee (q \to p )$ $p \vee ( p \to q )$ $p \to (p \to q )$ Mathematical Logic go-mathematics-1 mathematical-logic + – Bikram asked Aug 8, 2016 Bikram 278 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
Best answer 4 votes 4 votes Option C. Table p q (p∨q)→p p∨(q→p) p∨(p→q) p→(p→q) F F T T T T F T F F T T T F T T T F T T T T T T deebhatia answered Sep 14, 2016 • selected Sep 14, 2016 by Arjun deebhatia comment Share Follow See all 0 reply Please log in or register to add a comment.
2 votes 2 votes C) p v (p->q) =p v (p'vq) =(p v p') v q =T v q = T Hence Tautology. Nitesh Methani answered Nov 3, 2016 Nitesh Methani comment Share Follow See all 0 reply Please log in or register to add a comment.