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1300ApprenticePigeonhole PrincipleCombinatorics

Progetto Olimpiadi di Matematica - GARA di SECONDO LIVELLO

Qual è il numero minimo di carte che bisogna pescare da un ordinario mazzo di 52 per avere almeno il $50\%$ di probabilità di estrarre una o più carte di cuori? (A) 2 (B) 3 (C) 4 (D) 5 (E) 6 .
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