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Difficult friend - Colegiul National Mihail Eminescu (Satu Mare - Roumanie)

Titre du sujet: 
Difficult friend
Établissement:
Année:
Sujet jumelé ?: 
Non
Résumé: 
Somebody would like to invite six friends we will refer to as number 1, 2, 3, 4, 5, 6. Unfortunately, some of his/her friends don’t get on well : — 1 doesn’t get on well with 2 — 2 doesn’t get on well with 1, 5, 6 — 3 doesn’t get on well with 5 — 4 doesn’t get on well with 5 — 5 doesn’t get on well with 2, 3, 4, 6 — 6 doesn’t get on well with 2, 5 What is the minimum number of parties this person should have to see all his/her friends ? How should he/she proceed to have the maximum number of friends at each party ? (one friend can be present at several parties).
Mots clés:
Nombre d'élèves : 
3


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Sujet | by Dr. Radut