Problem B. 4725. (September 2015)
B. 4725. Show that if a simple graph has 7 vertices and no cycle of length 4 then it has a vertex whose degree is at most 2.
(4 pont)
Deadline expired on October 12, 2015.
Statistics:
158 students sent a solution. 4 points: 119 students. 3 points: 15 students. 2 points: 8 students. 1 point: 12 students. 0 point: 3 students. Unfair, not evaluated: 1 solutions.
Problems in Mathematics of KöMaL, September 2015