0 votes 0 votes i am getting 6 as answer Graph Theory discrete-mathematics graph-theory + – Prince Sindhiya asked Oct 15, 2018 Prince Sindhiya 602 views answer comment Share Follow See all 11 Comments See all 11 11 Comments reply Utkarsh Joshi commented Oct 15, 2018 reply Follow Share Yes!! 6 is correct! 0 votes 0 votes Magma commented Oct 15, 2018 reply Follow Share 5 is correct 0 votes 0 votes Magma commented Oct 15, 2018 reply Follow Share Total 5 regions 0 votes 0 votes akash.dinkar12 commented Oct 15, 2018 i edited by akash.dinkar12 Oct 15, 2018 reply Follow Share V-E+R =2 V=5 E= 9 5-9+R =2 R=6 (bounded regions + unbounded regions) 0 votes 0 votes vijju532 commented Oct 15, 2018 reply Follow Share given that it it planar graph although the above figure given by @Magma is right but if going to the question figure and calculating the v=5 e=9 region will be 6 if in question given that it it planar then have to go to @Magma approach 0 votes 0 votes Utkarsh Joshi commented Oct 15, 2018 reply Follow Share 6! 0 votes 0 votes Utkarsh Joshi commented Oct 15, 2018 reply Follow Share @magma have you considered an edge B-C? 0 votes 0 votes Shaik Masthan commented Oct 15, 2018 reply Follow Share planar graphs and regions are not in the syllabus ! 1 votes 1 votes akash.dinkar12 commented Oct 15, 2018 reply Follow Share Four color theorem is there, So it is better to aware of this.. 0 votes 0 votes Magma commented Oct 15, 2018 reply Follow Share Utkarsh Joshi yeah I'm wrong !! 0 votes 0 votes Prince Sindhiya commented Oct 15, 2018 reply Follow Share Thnxx utkarsh ,Akash :) 1 votes 1 votes Please log in or register to add a comment.