There are two rooms, one with 3 light bulbs and the other with three switches, each switch controls one and only one light bulb and each light bulb is controlled by one and only one switch. You are placed in the room with the switches with one simple task: to find out what switch controls what bulb. Unfortunately, you can only see the lights once you enter the second room and once you do so, you may not reenter the switch room. What's the minimum number of switches you must flip in order to figure out what switch controls what lightbulb (If you flip A switch twice it counts as flipping only ONE switch).
Inspired by brain games.