10 children play the game of eagle catching chicks, and prepare to write "eagle" and "chicken" on 10 cards, so as to maximize the possibility of touching "chicken" and the possibility of touching "eagle" The smallest, so how many cards with the word "chicken" should be written.
10个小朋友玩老鹰抓小鸡的游戏，准备在10张卡片上写上"老鹰"和"小鸡"字样，要使摸到"小鸡"的可能性最大，摸到"老鹰"的可能性最小，那么"小鸡"字样的卡片要写多少张．
<result>9</result>