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Esempio di notecard per quiz/porta

salahzar
Apr 5th, 2013
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  1. In un cassetto ci sono 3 calze verdi, 7 rosse e 9 nere. Quante calze devi pescare, senza guardarle, per averne due dello stesso colore?
  2. 3
  3. *4
  4. 7
  5. 9
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