How many ways are there to put 4 indistinguishable balls into 2 indistinguishable boxes?
Question:
How many ways are there to put 4 indistinguishable balls into 2 indistinguishable boxes?
Answer:
Let's think step by step.

user
3
How many ways are there to put 4 indistinguishable balls into 2 indistinguishable boxes?
train