Throw three darts each time to score 55. How many different combinations are there?

Question

Answer 1

One combination should be from (50,3,2)----Which will be !3=6. and now combination will be.
50-3-2
50-2-3
3-2-50
3-50-2
2-3-50
2-50-3
Second combination should be from (25,20,10)----Which will be !3=6. and now combination will be.
25-20-10
25-10-20
20-25-10
20-10-25
10-20-25
10-25-20

Comments

What about repeats ?
20 20 15
25 25 5
15 15 25
Etc.,