257 replies to this topic

[Innerself]

It is probably simple. First switch on one bulb for a while. Swith it off. Then switch on another and keep the other in off position. When you enter the room, warm bulb belongs to first switch, one glowing to the second, and one in switch off mode is the third.. Did I get correct.

[SuperGeek]

turn switch one on for 60 seconds.
turn switch one off and turn switch two on.
walk in the room.
the warm bulb belongs to switch one, the lit bulb belongs to switch two and the cold bulb belongs to switch three.

[musicguru1331]

Turn on 1 of the switches. Let it sit for a while. Turn it off. Turn another switch on. Go into the other room. The light that is on is run by the switch you just turned on. Feel the other two. The one that is warm is run by the switch you first flipped. The cold light is the third switch.

[funandatraveler]

turn one switch on = light bulb on

leave one switch off = light bulb off

turn one switch on then off just before you enter the room = bulb that is warm to the touch

[LordDrakka]

when you enter the room place three different colored bulbs in each socket qand then you can see what color matched each swith I would assume you can atleast see the lights color from the other room

[kckuno]

1st - Number switches 1,2,3.
2nd- Turn and keep switch 1 on, Turn switch 2 on for about a minute, Keep switch 3 off.
3rd - Go next door light 1 will be on, Light 2 will be warm but off, Light 3 will be off and cold.
Thus only going into room once and you will have correctly identified the 3 switches to the 3 lights.

[donniedarko]

Bulbs - Back to the Logic Puzzles
This is one of my favorite logic puzzles (Edit: it is more a practical than a logic puzzle).
Imagine you are in a room with 3 switches. In an adjacent room there are 3 bulbs (Edit: let's say in lamps which are on a regular table) - all are off at the moment, each switch belongs to one bulb. It is impossible to see from one room to another. How can you find out which switch belongs to which bulb, if you may enter the room with the bulbs only once?

Edit: No help from anybody else is allowed.
Edit: Find out which switch belongs to which bulb - identify all 3 switches (so find out what bulbs are switches 1, 2 and 3 connected to)

Spoiler for Solution

Bulbs - solution
Keep the first bulb switched on for a few minutes. It gets warm, right? So all you have to do then is ... switch it off, switch another one on, walk into the room with bulbs, touch them and tell which one was switched on as the first one (the warm one) and the others can be easily identified ...

smart

[fedex]

you could turn one light on go in and see. and take a mirror with you because it never said you couldnt use any objects to help you. you would then have to angle the mirror with the switches from the bulbs. pretty easy if you think about it

[^_^]

Alternatively:
-1 switch off = bulb off
-1 switch on = bulb on
-1 switch halfway (yes you can do this) = bulb dim & flickering

that would be so much easier than touching hot bulbs

[Herbi Rihiratu]

Switch A,B,C. Lamp X,Y,Z.

Turn on Switch A for 5 minutes. Turn of A. Turn on B. Go to the room. If X is on then X belongs to B. Feel Y and Z. If Y is warm then Y belongs to A. Then Z must be belong to C.