GMAT Practice Test Data Sufficiency總結(jié)

Of the students who eat in a certain cafeteria, each student either likes or dislikes lima beans and each student either likes or dislikes brussels sprouts. Of these students, [?] dislike lima beans; and [?] of those who dislike lima beans, [?] also dislike brussels sprouts. How many of the students like brussels sprouts but dislike lima beans