Connected graph

Question

The condition must be            |E| > ^n-1C₂  Isn't it???

Comments

172 is correct answer...

because n-1C2  says then G' with n-1 vertices is complete and G'' having single vertices...G'  is complete graph then this is connected component...for G to be connected these two component also must be connected..

171+1=172

---

Thank you @hs_yadav