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three lighbulbs riddle!?
you are standing outside a room with no windows and the door is shut. next to you are 3 light switches. inside the room are three lightbulbs.
how do you know which bulb belongs to which switch only entering the room once?
(ie you enter and you have to know)
13 Answers
- altonbushLv 41 decade agoFavourite answer
turn 2 on for 1 minute then turn 1 off. the one that is on is the one turned on the one that is warm is the one you turned off and the third is the one you didn't touch
- 1 decade ago
1. Switch on Switch-1and wait for 3 min and Switch off.
2. Next Switch on Switch-2 for 1 min and Switch off.
3. Enter the Room and touch the bulbs. Touch the all the three bulbs.
The hottest one belongs to 2nd Switch. The Warm bulb belongs to 1st Switch. The Cooler bulb belongs to the other one.
- whaleinorbitLv 41 decade ago
Flip a switch. Wait for a while. Flip another switch. Wait for a while. Turn both lights off. When you walk into the room, feel the bulbs for which is hot (bulb for first switch), warm(bulb for second switch) and cold (bulb for last switch).
- 1 decade ago
Easy!
Switch on the first switch for few moments and then switch it off.
Now switch on the second switch and enter the room.
1. The bulb which is on belongs to second switch and.
2. The bulb which is hot belongs to first switch and
3. The cold one belongs to third switch.
- cyberdocLv 61 decade ago
Turn on one switch, turn it off, turn on another switch and enter the room.
Unlighted warm bulb belongs to the first switch, lighted bulb belongs to the second switch and unlighted cold bulb belongs to the third switch.
- Anonymous1 decade ago
Turn one switch on and leave it on, turn another on, wait a minute, then turn it off. Now enter the room. Whichever lightbulb is still on is the switch you left on. Whichever lightbulb is off but still warm to the touch is the switch you turned on and off. Then the last lightbulb is the switch you never touched at all.
- 1 decade ago
punch a hole in the wall follow the wiring from each switch to the respective light bulb.
or if you were superman just use x-ray vision.
or if you were magneto use you powers to rip out the wires.
or ask the electrician who wired them.
- 1 decade ago
just turn on all the lights it not my hous so i dont gotta pay the electric bill