There are 10 digital cards "3", "4", and "5" each, and 8 of them are randomly selected so that the sum of their numbers is 27, then how many cards are at most "3".
数字卡片"3"、"4"、"5"各10张，从中任意选出8张，使它们的数字和是27，则最多有多少张是卡片"3"．
<result>6</result>