–1 votes –1 votes neelesh bhakt asked Dec 4, 2017 neelesh bhakt 400 views answer comment Share Follow See all 3 Comments See all 3 3 Comments reply Anu007 commented Dec 4, 2017 reply Follow Share given expression is wrong 0 votes 0 votes Shubhanshu commented Dec 4, 2017 reply Follow Share What is "there exist" doing in the question? 0 votes 0 votes Red_devil commented Dec 4, 2017 reply Follow Share i think in place of there exist there will be an and and then it will be a tautology. 0 votes 0 votes Please log in or register to add a comment.