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back to boardWhy for n=4 answer is 30? In my opinion, for n=4 the correct answer is 20 if I understood the condition of the problem correctly, i.e for n=3 there are exists 2 ways: 123231 and 132321. Please, explain me my mistake if I'm wrong. Re: Why for n=4 answer is 30? 12324341 12342341 12342431 12343241 12343421 12423431 12432341 12432431 12434231 12434321 13234241 13242341 13242431 13243241 13243421 13423241 13423421 13424231 13424321 13432421 14232341 14232431 14234231 14234321 14243231 14323241 14323421 14324231 14324321 14342321 Re: Why for n=4 answer is 30? Oh! Now I understood my mistake. Thank you! |
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