1 votes 1 votes How to solve this question in exam.? Mathematical Logic propositional-logic + – Anmol_Binani asked Jan 2, 2018 Anmol_Binani 290 views answer comment Share Follow See all 3 Comments See all 3 3 Comments reply Ashwin Kulkarni commented Jan 2, 2018 reply Follow Share valid are S3 and S4? 0 votes 0 votes Anmol_Binani commented Jan 2, 2018 reply Follow Share I did get S3 valid. The answer given is C. But it is wrong because S1 is not true. It would have been true if we had $( p \rightarrow (q \Lambda r )) $ 0 votes 0 votes Ashwin Kulkarni commented Jan 2, 2018 reply Follow Share Yes S1 is not true. and S2 is also not true. Hence by elimination of options I marked C 0 votes 0 votes Please log in or register to add a comment.
