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Rechercher - Forum de Mathématiques: Maths-Forum

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Aidez moi

Suppose all n men at a party throw their hats in the center of the room. Each man then randomly selects a hat. Show that the probability that none of the n men winds up with his own hat is 1/2! 1/3! + 1/4! - + . (-1)n/n!. Note that as this converges to e-1. Is this surprising ? (would you have in...

par lachasse: 27 Juil 2006, 20:38; Forum: ✯✎ Supérieur; Sujet: Aidez moi; Réponses: 0; Vues: 690

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