At math ville middle school there were 50 students and 50 lockers each year for pi day the students lined up in alphabetical order and performed the following strange ritual the first student opened every locker the second student went to every second locker and closed it the third student went to every third locker and changed it (if the locker was open it was closed, locker was closed open. in a similar manner, the fourth, fifth, student changed every firth locker. after all 50 students have passed by the locjers, which ones we're open? plz i'm really confused with this