Thursday, October 29, 2009

Quiz - 3

There are 3 switches outside a room controlling the 3 fluorescent lights inside that room.
The door to that room is shut.
You can only enter the room once.
And once you have entered, you are not allowed to come out of that room.

How then are you able to tell, which switch controls which light?

3 comments:

Blessed mum said...

hey..where did u get all these quiz from??

hmm...wonder why u need to control the light? Just on all the 3 switches lor..gagaga..

sorry la..brain near dead..cant think. *wink*

Angeline said...

Blessed mum,

You FUNNY lady!!!
*huge laugh*
Lazy to think right????

Ok, here's answering your question:
"I love quizzes, so some of them I have heard a long time ago, but forgotten, until recently a friend has been reviving this Passion of mine. Hence these first 3 I must say were from him, but I have done them many many years ago.
The coming Future quizzes will be from my memory, of all the quizzes I have done in the past."

Angeline said...

Here's the answer:

BEFORE you open the door, switch on 2, leave 1 off.

After 5mins, switch 1 of the 'On' OFF.

Now, open the door and enter. You should see 2 lights OFF and 1 light ON.

To know which bulb is the one you had switched on at first and then switched off after 5 mins, go touch the 2 OFF lights, the one that felt warmer is the one.

Hence you know which switch controls which light.
*wink*