Post:

You have three switches in one room and a single light bulb in another room. You are allowed to visit the room with the light bulb only once. How do you figure out which switch controls the bulb? Write your answer in the comments before looking at other answers.


Comment:

If this were an interview question, the correct response would be "Do you have any relevant questions for me? Because have a long list of things that more deserving of my precious time than to think about this!

  • Skyline969@lemmy.ca
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    7 天前

    Only works if it’s an incandescent light, but…

    Flip one switch. Wait a few minutes. Flip it off.

    Flip the second switch and go into the room.

    If the light is on, it’s the switch you flipped most recently. If the light is off but warm, it was the first switch. If it’s off and cold, it’s the switch you didn’t touch.

  • AstroLightz@lemmy.world
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    5 天前

    Go in the room, smash the lightbulb. There, now it’s none of the switches.

    I think I’ll pass this interview no problem.

    Edit: Damn, someone beat me to it. I posted without reading the comments as instructed.

  • Greg Clarke@lemmy.ca
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    7 天前

    Turn off all of the switches, go into the room with the bulb, smash the bulb, then the correct answer is none of the switches control the bulb. #Science

  • emotional_soup_88@programming.dev
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    6 天前

    Dead serious question: I have only ever worked in the public sector (state level and local municipality) but often see or hear about these seemingly idiotic “interview questions” on television (and obviously memes).

    Is this:

    1. just a meme
    2. just a joke
    3. an actual phenomenon in the private sector

    If 3, what on earth is its purpose and what could the interviewer possibly find out about the applicant by asking this?

    I’m calm.

    • MyNameIsRichard@lemmy.ml
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      6 天前

      In the private sector, I once was asked to come up with 12 uses for a kettle. I said make 12 cups of coffee. I didn’t get the job.

    • MrSmith@lemmy.world
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      6 天前

      It started when Google started hiring hoardes of people and their interview questions “that only a genius could solve” started leaking. At some point, everyone wanted to work at Google, because they had a slide and free sandwiches and whatnot.

      Then, every startup, turtlenecked steve jobs-wannabe started copying those nonsensical questions that only “gifted” people could answer.

      It’s definitely a thing, praised by every linkedin lunatic, for finding people who “want to be a part of the family”, are “willing to give it 1100%”, and will do overtime for free to prove they’re “worth it”.

  • TORFdot0@lemmy.world
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    7 天前

    I assume this is a question to weed out candidates using AI as it’s not possible but AI tries to solve for it anyway.

  • Krimika@lemmy.world
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    6 天前

    There is no correct answer. The problem in this comment is this is not your time, it’s the interviewer’s time