Coburg Banks | Multi-sector UK recruitment agency

The Windowless Room.

By Anthony Hughes | Dec 22, 2013 | Friday Funnies

Brainteaser Answer 11:

First and foremost, for your own reference, name the switches “a, b and c.”


Turn on switches a and b.

  • Wait 10 minutes.
  • Turn switch b off.
  • Enter the room.
  • Whichever light bulb is now on, is controlled by switch a (the only one, still on).
  • Feel the other 2 light bulbs (carefully).
  • Whichever light bulb is warm is controlled by switch b.
  • The cold light bulb must be controlled by switch c.

All you have to do is think outside the box!

- Anthony Hughes

Anthony Hughes

Anthony is a recruitment veteran of 18 years and is also one of the original founders of Coburg Banks. He now trains recruitment consultants on the best methods to utilise when sourcing and assessing applicants for their clients. 


> More blog posts by Anthony Hughes

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