1 votes 1 votes Aditya Bahuguna asked Jan 4, 2018 Aditya Bahuguna 321 views answer comment Share Follow See all 3 Comments See all 3 3 Comments reply Sahil1994 commented Jan 4, 2018 reply Follow Share is it contingency..? 2 votes 2 votes Mk Utkarsh commented Jan 5, 2018 reply Follow Share can also be written as $\left \{(\overline{P}\vee Q)\wedge (\overline{R}\vee Q)\wedge R \right \}\rightarrow P$ to make it True we need to make LHS False which will be false when P =T, R = T, Q =F and to make it false P=F, Q=T, R=T LHS and RHS both true Hence Contingency 0 votes 0 votes Manu Thakur commented Jan 5, 2018 reply Follow Share Instead of doing reduction, we can solve it another way. r is true, so, q has to be true. if q is true hence !q is false so " p either can be true or false". so it is contingency. 0 votes 0 votes Please log in or register to add a comment.