Boxes are always fun
Probability
Level
pending
In how many ways 12 identical balls can be placed in 3 identical boxes?
The answer is 19.
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1 solution
10+1+1
9+2+1
8+3+1
8+2+2
7+1+4
7+2+3
6+1+5
6+2+4
6+3+3
5+2+5
5+3+4
4+4+4
10+2+0
9+3+0
8+4+0
7+5+0
6+6+0
12+0+0
11+1+0
There are 19 ways. Since the balls and boxes are identical, 10+1+1 is the as 1+10+1 and 1+1+10