All Questions

100 Switches

00:00:00

Parts

Part 1

There are 100 switches in a room and each of them are initially flipped to the left. The first person enters the room and flips every switch. The second person enters the room and flips every other switch. The third person enters and flips every third switch. The process continues until the 100-th person has flipped every 100-th switch. How many switches are turned to the right?