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For part (a) I just followed an example in the book and said the answer was 10 choose 3, is this right? I wasn't quite sure how to start part (b). --[[User:Rhollowe|Rhollowe]] 16:46, 4 February 2009 (UTC) | For part (a) I just followed an example in the book and said the answer was 10 choose 3, is this right? I wasn't quite sure how to start part (b). --[[User:Rhollowe|Rhollowe]] 16:46, 4 February 2009 (UTC) | ||
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| − | + | For part b), can we just consider the cases when 0s are exactly 6,7,8,9,10 and add up those numbers? | |
| − | + | I don't see any problem... --[[User:Lee|Lee]] 18:02, 4 February 2009 (UTC) | |
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Revision as of 13:02, 4 February 2009
For part (a) I just followed an example in the book and said the answer was 10 choose 3, is this right? I wasn't quite sure how to start part (b). --Rhollowe 16:46, 4 February 2009 (UTC)
For part b), can we just consider the cases when 0s are exactly 6,7,8,9,10 and add up those numbers?
I don't see any problem... --Lee 18:02, 4 February 2009 (UTC)
