中等math-u09-d03
A committee of 3 is chosen from 10 candidates and the order of selection does not matter. The correct counting method is:
A. The combination 10C3✓ 答案
B. The permutation 10P3
C. 10 x 10 x 10
D. 10 x 9 x 8
解說
Order does not matter, so combinations are used. The permutation 10P3 would count the same three people in different orders as different outcomes.