蒼鷹 asked in 社會與文化語言 · 8 years ago

一個英文文章的問題

A puzzle, 請幫我解答(非翻譯),如果能用英文更好,感謝

There are three lights in a closed room and three light switches outside the room.

The lights inside the room are off. You need to work out which switch is for which

light. You can use the switches and then go in the room once. You must then come out and say which switch is for which light. What do you do?

2 Answers

Rating
  • 8 years ago
    Favorite Answer

    You turn on two switches and keep them on for a few minutes. Then you turn off one of the switches and enter the room. Feel the bulbs, the bulb that is lit is for the switch that is on "on" position, the bulb that is warm is for the switch that you turned off before you entered the room. The cold bulb is obviously controlled by the switch that was never touched.

    I have to tell you that I did not figure this out by myself. I found the answer online.

    I hope it helps.

  • Shuang
    Lv 7
    8 years ago

    If in the room light is on, then the switch is on. Done!

    Source(s): me
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