How many ways can 15 horses finish 1st, 2nd, and 3rd in a race?

Is this a combination or permutation?

Answer:. There are 10 different horses that can come in first.

2. Then, there are 9 different horses that can come in second.

3. After that, there are 8 horses left that can come in third.

4 ... Therefore, 10 times 9 times