| Re: Подскажите МО прихода заготовки на 6-ую ID:10569 ответ на 10566 |
Чт, 22 декабря 2005 10:39 [#] |
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Пишу тебе инфу с западного сайта (на английском).
Переводить и подсчитать твои цифры можешь сам.
Всё подробно расписано.
Мне самому влом 
Flush
There are 4 suits to choose from and combin(13,5) = 1,287 ways to arrange five cards in the same suit. From 1,287 subtract 10 for the ten high cards that can lead a straight, resulting in a straight flush, leaving 1,277. Then multiply for 4 for the four suits, resulting in 5,108 ways to form a flush.
Straight
The highest card in a straight flush can be 5,6,7,8,9,10,Jack,Queen,King, or Ace. Thus there are 10 possible high cards. Each card may be of four different suits. The number of ways to arrange five cards of four different suits is 4^5 = 1024. Next subtract 4 from 1024 for the four ways to form a flush, resulting in a straight flush, leaving 1020. The total number of ways to form a straight is 10*1020=10,200.
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