[Tfug] [OT] A good brainteaser to flex your sad and flabby hacker brain muscles.

Terence Rudkin trudkin at gmail.com
Tue Apr 10 09:14:07 MST 2007


Flip on two switches, wait 30 sec.  Switch one off.
The light that is on is the on switch. the light that is off but hot is the
switch that was toggled both on and off.  The cold one is on the un touched
switched.

TR


On 4/10/07, Bowie J. Poag <bpoag at comcast.net> wrote:
>
>
> Lets see how long it takes you guys to figure this one out. :)
>
>
> Hack This Box
> ----------------
>
> You interview for a job at a local software engineering firm... Their
> interviewer, a Unix admin (of course!), walks into the room and places a
> strange looking box covered with signatures and times on the table
> infront of you.
>
> He smiles at you and says, "This is a completely sealed, water-tight,
> air-tight, and light-tight wooden box. It has three switches on the
> outside that control three light bulbs on the inside. You're only
> allowed to flip the switches while the lid is closed. If you open the
> lid, you're not allowed to touch any of the switches ever again. How can
> you tell which switch controls which bulb? If you can figure this out,
> you'll get the job. If not, well....good luck in your future endeavors,
> kid. You've got one hour. Incidentally, all those signatures and times?
> They're from everyone who's gotten a job here."
>
> ( Note: This is NOT a trick question--Yes, the box has power, and yes,
> the lightbulbs are screwed in, etc. There are at least two valid answers.
> )
>
>
> Bowie J. Poag, 17 minutes 5 seconds. :)
>
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