There is a 5 story lighthouse out on a rock in the ocean. At the top of the lighthouse, there are three lightbulbs attached to the wall. At the base of the lighthouse there are three switches that control them but you don't know which switch corresponds to which light. At the beginning all the lights are off and you are at the base of the lighthouse. Without ripping out the wires from the wall or anything like that, what is the least number of trips you must make up or down the long staircase to figure out which switch controls each of the lights?
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There is a 5 story lighthouse out on a rock in the ocean. At the top of the lighthouse, there are three lightbulbs attached to the wall. At the base of the lighthouse there are three switches that control them but you don't know which switch corresponds to which light. At the beginning all the lights are off and you are at the base of the lighthouse. Without ripping out the wires from the wall or anything like that, what is the least number of trips you must make up or down the long staircase to figure out which switch controls each of the lights?
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