Talk:Ordered partitions: Difference between revisions
Content added Content deleted
No edit summary |
|||
Line 11:
:Never mind, I fixed it. --[[User:Rdm|Rdm]] 22:36, 7 February 2011 (UTC)
:: Is it really fixed? As far as I know choose, the bigger number should be on the left. Anyways, I'll change it to
::: <math>{\mathit{arg}_1+\mathit{arg}_2+...+\mathit{arg}_n \choose \mathit{arg}_1} \cdot {\mathit{arg}_2+\mathit{arg}_3+...+\mathit{arg}_n \choose \mathit{arg}_2} \cdot \ldots \cdot {\mathit{arg}_n \choose \mathit{arg}_n}</math>
:: to make it clearer --[[User:Newgame|Eugen]] 10:36, 8 February 2011 (UTC)
|
Revision as of 10:36, 8 February 2011
Incorrect math statement
The task says:
- Note that the number of elements in the list is
But this cannot be right.
The task with args 1,2,4 would generate 105 distinct partitions. But 4 choose 1
is 0 and 4 choose 2
is 0 and 4 choose 4
is 1, so the above formula would give a result of 6. --Rdm 22:27, 7 February 2011 (UTC)
- Never mind, I fixed it. --Rdm 22:36, 7 February 2011 (UTC)
- Is it really fixed? As far as I know choose, the bigger number should be on the left. Anyways, I'll change it to
- to make it clearer --Eugen 10:36, 8 February 2011 (UTC)