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Card Deck Shuffling Probability

1550AdeptCombinatoricsProbability

Olimpiadi di Matematica

Alberto, Barbara, Chiara e Davide mescolano un mazzo di 40 carte e poi ne distribuiscono 10 a testa. Alberto guarda le sue ed esclama: "Che strano, non ho nessuna carta di picche". Sapendo questa informazione, qual è la probabilità che anche Barbara non abbia nessuna carta di picche? (nota: le carte di picche sono 10).

Answer choices

A
$\frac{30 !}{20 ! 40 !}$
B
$\frac{20 !}{10 ! 30 !}$
C
$\frac{30 ! 30 !}{20 ! 40 !}$
D
$\frac{20 ! 20 !}{10 ! 30 !}$
E
$\frac{30 ! 10 !}{40 !}$
0 students attempted0% solvedRating 1550

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