A:﹣1,8
B:﹣1,+∞)
C:0,8
D:﹣1,0
一同学在n天假期中观察:
(1)下了7次雨,在上午或下午
(2)当下午下雨时,上午是晴天
(3)一共有5个下午是晴天
(4)一共有6个上午是晴天
则n最小为( )
—Let's go to watch the cosplay show!—Sorry, I . I have to go to my guitar lesson.