N個相同的球放進三個相同的箱子有幾種分法?(容許箱子內無球)
比如N為4時, 有4種, (4,0,0) (3,1,0) (2,2,0) (2,1,1)
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推
04/13 23:27, , 1F
04/13 23:27, 1F
→
04/13 23:31, , 2F
04/13 23:31, 2F
→
04/13 23:52, , 3F
04/13 23:52, 3F
推
04/14 01:05, , 4F
04/14 01:05, 4F
→
04/14 08:53, , 5F
04/14 08:53, 5F
→
04/14 08:53, , 6F
04/14 08:53, 6F
→
04/14 10:49, , 7F
04/14 10:49, 7F
→
04/14 15:53, , 8F
04/14 15:53, 8F
推
04/14 18:12, , 9F
04/14 18:12, 9F