1 votes 1 votes Mathematical Logic mathematical-logic + – Samujjal Das asked Dec 15, 2016 retagged May 12, 2021 by Shiva Sagar Rao Samujjal Das 1.0k views answer comment Share Follow See all 8 Comments See all 8 8 Comments reply Show 5 previous comments thor commented Dec 15, 2016 reply Follow Share @santhoshdevulapally In above statement if everyone is not a politician then B converts to false→∃xQ(x) which is true but above statement yields false. How is it right?? 0 votes 0 votes santhoshdevulapally commented Dec 15, 2016 reply Follow Share instead of taking statement derive using predicates. otherwise take p(1)= F and p(2)=T. & Q(1)=T and Q(2)=F. $\forall xP(x)=p(1)\wedge p(2) \exists xP(x)=p(1)\vee p(2)$. apply for p->q and q->p then u get p=q. 1 votes 1 votes Shiva Sagar Rao commented May 12, 2021 reply Follow Share https://gateoverflow.in/103060/logic 0 votes 0 votes Please log in or register to add a comment.