Scenario:
A group of Sales Engineers (SEs) are in a waiting queue. In the next room is a panel of light switches, each connected to a working lightbulb. Each SE will sequentially enter the room and toggle their assigned light switch(es) in order. With the first SE toggling all the lights on, the second SE will toggle every other light switch, the third SE every third, and so on and so forth. Upon completion of their task, the SE exits to a waiting room.
Calculate:
Enter the number of SEs in the group to see how many lights are left ON/OFF after the last SE enters the waiting room.