1 votes 1 votes “If $X$, then $Y$ unless $Z$” is represented by which of the following formulae in propositional logic? $(X \wedge Y) \rightarrow \neg Z$ $(X \wedge \neg Z) \rightarrow Y$ $X \rightarrow (Y \wedge \neg Z)$ $Y \rightarrow (X \wedge \neg Z)$ Unknown Category ugcnetcse-nov2017-paper3 + – Arjun asked Nov 5, 2017 • edited Jul 6, 2020 by go_editor Arjun 649 views answer comment Share Follow See all 2 Comments See all 2 2 Comments reply akshat sharma commented Feb 1, 2018 reply Follow Share is it B? 0 votes 0 votes kavikeve commented Feb 1, 2018 reply Follow Share Can u Explain how ?? 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes https://gateoverflow.in/812/gate2002-1-8 Raveena Yadav 1 answered Feb 1, 2018 Raveena Yadav 1 comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Answer (2) If X, then Y unless Z ie equivalent to : X -> (Z' -> Y). Now, X -> (Z' -> Y) = X -> (Z + Y) = X' + Z + Y This matches with option (2) GoalSet1 answered Aug 22, 2019 GoalSet1 comment Share Follow See all 0 reply Please log in or register to add a comment.