Answer:
125,970
Step-by-step explanation:
Even if jury are assigned numbers, the order in which they are picked has no importance. That means that it's a combination, not a permutation.
The formula to calculate possible combinations is:
[tex]C(n,r) = \frac{n!}{(r! (n-r)!)}[/tex]
Where n is the global population, and r is the number of selected items.
In our case, n = 20 and r = 12, so...
[tex]C(20,12) = \frac{20!}{(12! (20-12)!)} = 125970[/tex]
There are 125970 different ways to select 12 jury members out of 20 people.
