Which lockers remained open

Reference no: EM13204597

The first student into the building opened each of the 500 lockers. The second student closed every even numbered locker. The third student changed every third locker (closed the locker if open, open if closed).The fourth student changed every fourth locker, and so on. when all 500 students had taken a turn, which lockers remained open?

Reference no: EM13204597

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