Calcolo Combinatorio E Probabilita -italian Edi... -

Enzo clapped. "A combinatorial probability with two stages!"

Just then, the bell rang. Three new customers entered: a nun, a clown, and a beekeeper.

"So," Chiara said, "a 1% chance. Rare, but possible." Calcolo combinatorio e probabilita -Italian Edi...

"Enzo," she said, "what’s the probability that the three chosen customers all pick the same topping?"

Each of 3 people chooses 1 topping from 10: [ 10 \times 10 \times 10 = 1000 ] Enzo clapped

In the narrow, lantern-lit streets of Perugia, old Enzo ran the most beloved pizzeria in Umbria. But Enzo had a secret: he was also a mathematician who had retired early from the University of Bologna.

Number of ways to choose 3 distinct customers in order: [ 20 \times 19 \times 18 = 6840 ] (This step doesn’t affect the probability of making a pizza because it’s always possible to pick toppings regardless of who they are. The only cancelling event is the card draw.) "So," Chiara said, "a 1% chance

Enzo laughed. "Life is random, cara mia . But understanding the combinations helps you not fear the uncertainty."