求教prep

leijian22

（DS） of the students who eat in a cafeteria, each student either likes or dislikes lima beans and each student either likes or dislikes brussels sprouts. of these students, 2/3 dislike lima bean and of those who dislike lima beans, 3/5 also dislike brussels sprouts, how many of students like brussels spouts but dislike lima beans?

dadadaxia

2/3*(1-3/5)=4/15