MathDB

126

Part of 1969 All Soviet Union Mathematical Olympiad

Problems(1)

ASU 126 All Soviet Union MO 1969 20 football teams in championship

Source:

6/23/2019
2020 football teams participate in the championship. What minimal number of the games should be played to provide the property:
from the three arbitrary teams we can find at least on pair that have already met in the championship.
combinatoricsTournament