How can I solve the below question without writing down the cases? If boxes were also non-identical, I know the answer will be 10^4. Is there any such formula for this case?
Q: How many ways can you arrange 10 non-identical balls in 4 identical boxes? (assuming 1 or more boxes can be empty)
Q: How many ways can you arrange 10 non-identical balls in 4 identical boxes? (assuming 1 or more boxes can be empty)








