There are 9 passengers on a bus, some know each other. Among every 3 passengers there are two who know each other. Prove that there are at least 5 passengers, each of which knows at least 4 people on the bus.
2026-03-25 11:08:32.1774436912
Combinatorics Ramsey Theory Proof
60 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail AtRelated Questions in COMBINATORICS
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