皮皮学，免费搜题
登录
搜题
【单选题】
排列13...(2n-1)24...2n的逆序数为( ) (备注:前半部分是1,3,5, ,2n—1,后半部分是2,4,6, ,2n)A.
n
B.
2n
C.
n/2
D.
n(n-1)/2
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】听力原文：Why are you working late? (A) You never work at night. (B) Because my work is finished. (C) I have to finish this report. (30)
A.
B.
【简答题】习题册11页题
【单选题】-Why are you working so hard?
A.
need to get my debt cleaned up____.
B.
as quickly as possible
C.
as soon as possible
D.
as quickly as I can
E.
as soon as
【单选题】Why are you working so hard? I need to get my debt cleaned up .
A.
as quickly as possible
B.
as soon as possible
C.
as quickly as I can
D.
as soon as
【简答题】习题册 1.1题
相关题目：
参考解析：
知识点：
题目纠错 0
发布
