[OK]

See Details
Privacy Policy + T&C

We use cookies to personalise content and adverts. We also share information about your use of our site with our advertising partners who may combine it with other information you’ve provided to them or they’ve collected from your use of their services. You also agree to our terms and conditions (T&C).

BB Logo
Spacer
Line
Line

Puzzle - Answer

There is a closed room with a light in it. Outside, there are 3 light switches.

You can flick any of the switches any number of times.

You can only open the door and go into the room once.

You know that the light is initially off and you can't see what happens when you flick the switches.

How can you determine which light switch operates the light?

 [Ref: ZKIC]

Answer:
Leave switch 1 alone.

Flick switch 2 for 1 hour, then flick back.

Flick switch 3.

Now look. If the light is on, then the switch is 3, if the light bulb is warm, then switch 2, else switch 1.

Back to the puzzles...


Our Favourite Illusions

 Shadow Illusion

 What Am I?

 Hidden Faces

 Impossible Waterfall?

 Same Eyes?

 Impossible Prongs?

 Duck Or Rabbit?

 Spinning Dancer

 Who Turned To?

 Blind Spot

 The Butterfly

 Parallel Cafe Wall Lines?

 

 



BrainBashers™ is a trademark. We use cookies to personalise content and adverts. We also share information about your use of our site with our advertising partners who may combine it with other information you’ve provided to them or they’ve collected from your use of their services. For more information please view our privacy policy. By using the site you also agree to our terms and conditions.

Line
Line