>Actually, it's kind of a lame question now. I figured everyone knew that it's
>a Microsoft interview question. Well, that is, it used to be one until
>the word got out. Worry not, we've gots lots more like that one that
>few have heard about. :-)
>
>Say, for instance, you've got one room with three light bulbs and another room
>with...

I had heard that one before I got asked it, but not recently enough to actually remember the answer....