I WENT 2 BED AT 8'CLOCK in the evening and wound up my clock and set d alarm 2 sound at 9'clock in d morning.how many hrs sleep would i get be4 being awoken by d alarm??

IF A DOCTOR GIVES U 3PILLS AND TELLS U 2 TAKE 1 PILL EVERY HALF HOUR, HOW LONG WOULD IT BE BE4 ALL D PILLS HAD BEEN TAKEN??