lateral thinking

Three switches outside a windowless room are connected to 3 light bulbs inside the room. How can you determine which switch is connected to which bulb if you are only allowed to enter the room once?

Originally posted by belgianfreak
Three switches outside a windowless room are connected to 3 light bulbs inside the room. How can you determine which switch is connected to which bulb if you are only allowed to enter the room once?

Open the door and leave it open. Then mess around with the switches, checking which one lights which bulb by looking through the doorway at appropriate times without actually entering the room again.

1.label switches 1,2,3
2. turn on switches 1 and 2
3. enter the room
4. the unlit bulb is controlled by switch 3
5. unscrew one of the lighted bulbs
6. leave room but leave door open
7. turn off switch 2
8. if room is still lit, switch 2 controls the unscrewed bulb.
9. if room becomes dark, switch 1 controls the unscrewed bulb.

regards, Marc

Turn on switch 1.
Leave it on for 5/10 mins.
Turn off switch 1.
Turn on switch 2.
Go into the room.
The lit bulb is connected to switch 2.
The unlit and cold bulb is connected to switch 3.
The unlit and warm bulb is connected to switch 1.

A woman has two daughters who were born on the same hour of the same day of the same year. They are not twins. ow could this be?
😛

Originally posted by timmo
A woman has two daughters who were born on the same hour of the same day of the same year. They are not twins. ow could this be?
😛

One (or both) of the daughters was adopted? 😏

Originally posted by belgianfreak
Three switches outside a windowless room are connected to 3 light bulbs inside the room. How can you determine which switch is connected to which bulb if you are only allowed to enter the room once?

A windowless room? Oh, thank goodness! This means that if any blind men should be stationed in the room, they can't describe imaginary scenes outside the window. 🙄

Originally posted by rwingett
One (or both) of the daughters was adopted? 😏

Nope, they are daughters by birth.

good answers, and none of them are wrong. My answer was the same as Timmo's - either that or enter the room, remove the light bulbs, replace them with a rabbit, a rat and a skunk. Exit the room and listen to the different noises you get when each switch is thrown. You would smell the skunk.

Sick, sick, sick...

Originally posted by timmo
Nope, they are daughters by birth.

The daughter has a split personality.

Originally posted by timmo
A woman has two daughters who were born on the same hour of the same day of the same year. They are not twins. ow could this be?
😛

they could have another (or more than one) sister or brother.

Originally posted by sintubin
they could have another (or more than one) sister or brother.

you mean there might have been 3+, making them triples etc. not twins?? Could work...

Originally posted by belgianfreak
you mean there might have been 3+, making them triples etc. not twins?? Could work...

...is the correct answer...