A B C D E 5人站一排,A B均不与C相邻的站法有几种

问题描述:

A B C D E 5人站一排,A B均不与C相邻的站法有几种

所有情形-AC相邻-BC相邻+ABC相邻(即C在AB中间)
A(5,5)-A(4,4)*A(2,2)-A(4,4)*A(2,2)+A(3,3)*A(2,2)
=120-48-48+12
=36种