
Calcolo combinatorio e probabilità
Authored by Caterina Fissore
Mathematics
11th Grade
Used 34+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In tre classi quinte di una scuola ci sono rispettivamente 22, 18 e 23 alunni. Occorre mandare una rappresentanza formata da un alunno di ciascuna quinta. Quante sono le terne di studenti che è possibile formare?
1280
3152
9108
2555
9810
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Trova quanti codici a cinque cifre si possono formare con le cifre decimali da 0 a 9, sapendo che la prima cifra non può essere 0.
50000
10000
90000
20000
40000
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Calcola in quanti modi si possono estrarre cinque carte di fiori o cinque carte di picche da un mazzo di cinquantadue carte.
2574
3564
3241
1154
5525
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Individua la soluzione dell'equazione:
2Dx-1,3-Dx+1,3=2Dx,2
7
12
5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Individua la soluzione dell'equazione:
Cx-2,2 = 3(2-x)+2Cx-1,2
10
7
-2
5
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Abbiamo un dado a 4 facce, recanti i numeri 1, 3, 5, 7, e un dado a 8 facce, recanti i numeri 2, 4, 6, 8, 10, 12, 14, 16 (per ciascun dado tutte le facce hanno la stessa probabilità di uscire). Qual è la probabilità che, lanciandoli contemporaneamente entrambi una sola volta, si ottenga come somma 11?
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In un’urna ci sono 30 biglie bianche e 40 nere. Si estraggono contemporaneamente due biglie. Qual è la probabilità che siano entrambe bianche?
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