Answer:
1320
Explanation:
This is a simple permutation.
Since you start with 12 people and there are 3 winners, after every winner the number pf people available to win decrease.
First, there are 12 people, then after the first win there are 11 people, and after the 2nd win, for the third win the there are 10 people.
Thus, to find the total number of combinations, you multiply:
12*11*10=1320
Thus, there are 1320 possible combinations